New title bar accent color is too bright

[TCAtrevor]

Describe the bug
Since updating Lepton to fix the broken title bar accent color, I immediately noticed how bright it now appeared. Before, it matched more accurately with the color of other windows' title bars.

Expected behavior
Title bar color matching the appearance of previous versions, as well as other apps on the system. (Notepad used in example screenshot.)

Screenshots

Environment:

• Distribution
  • Original Lepton
  • Lepton's photon style
  • Lepton's proton style
• Firefox Version: 103.0
• OS:
  • Linux
  • Windows
  • Mac
  • Other:
• Theme:
  • Light
  • Dark
  • Alpenglow (System: Light)
  • Alpenglow (System: Dark)
  • System Default
  • Other: (e.g. Photon Colors, Google Chrome Dark, Fairytale Of Nature)

user.js setup

// ** Theme Default Options ****************************************************
// userchrome.css usercontent.css activate
user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true);

// Proton Enabled #127 || Removed at 97 #328 (Maintained for compatibility with ESR)
user_pref("browser.proton.enabled", true);

// Proton Tooltip
user_pref("browser.proton.places-tooltip.enabled", true);

// Fill SVG Color
user_pref("svg.context-properties.content.enabled", true);

// CSS Color Mix - 88 Above
user_pref("layout.css.color-mix.enabled", true);

// CSS Blur Filter - 88 Above
user_pref("layout.css.backdrop-filter.enabled", true);

// Restore Compact Mode - 89 Above
user_pref("browser.compactmode.show", true);

// about:home Search Bar - 89 Above
user_pref("browser.newtabpage.activity-stream.improvesearch.handoffToAwesomebar", false);

// Browser Theme Based Scheme - Will be activate 95 Above
// user_pref("layout.css.prefers-color-scheme.content-override", 3);

// ** Theme Related Options ****************************************************
// == Theme Distribution Settings ==============================================
// The rows that are located continuously must be changed `true`/`false` explicitly because there is a collision.
// https://github.com/black7375/Firefox-UI-Fix/wiki/Options#important
user_pref("userChrome.tab.connect_to_window",          true); // Original, Photon
user_pref("userChrome.tab.color_like_toolbar",         true); // Original, Photon

user_pref("userChrome.tab.lepton_like_padding",       false); // Original
user_pref("userChrome.tab.photon_like_padding",        true); // Photon

user_pref("userChrome.tab.dynamic_separtor",          false); // Original, Proton
user_pref("userChrome.tab.static_separator",           true); // Photon
user_pref("userChrome.tab.static_separator.selected_accent", false); // Just option

user_pref("userChrome.tab.newtab_button_like_tab",    false); // Original
user_pref("userChrome.tab.newtab_button_smaller",      true); // Photon
user_pref("userChrome.tab.newtab_button_proton",      false); // Proton

user_pref("userChrome.icon.panel_full",               false); // Original, Proton
user_pref("userChrome.icon.panel_photon",              true); // Photon
user_pref("userChrome.icon.panel_sparse",             false); // Just option

// Original Only
user_pref("userChrome.tab.box_shadow",                false);
user_pref("userChrome.tab.bottom_rounded_corner",     false);

// Photon Only
user_pref("userChrome.tab.photon_like_contextline",    true);
user_pref("userChrome.rounding.square_tab",            true);

// == Theme Compatibility Settings =============================================
// user_pref("userChrome.compatibility.accent_color",         true); // Firefox v103 Below
// user_pref("userChrome.compatibility.covered_header_image", true);
// user_pref("userChrome.compatibility.panel_cutoff",         true);
// user_pref("userChrome.compatibility.navbar_top_border",    true);
// user_pref("userChrome.compatibility.dynamic_separator",    true); // Need dynamic_seperator

// user_pref("userChrome.compatiblity.os.linux_non_native_titlebar_button", true);
// user_pref("userChrome.compatibility.os.windows_maximized, true");

// == Theme Custom Settings ====================================================
// -- User Chrome --------------------------------------------------------------
// user_pref("userChrome.decoration.disable_panel_animate",    true);
// user_pref("userChrome.decoration.disable_sidebar_animate",  true);

// user_pref("userChrome.theme.proton_color.dark_blue_accent", true);

// user_pref("userChrome.rounding.square_button",              true);
// user_pref("userChrome.rounding.square_panel",               true);
// user_pref("userChrome.rounding.square_panelitem",           true);
// user_pref("userChrome.rounding.square_menupopup",           true);
// user_pref("userChrome.rounding.square_menuitem",            true);
// user_pref("userChrome.rounding.square_field",               true);
// user_pref("userChrome.rounding.square_checklabel",          true);

// user_pref("userChrome.padding.first_tab",                   true);
// user_pref("userChrome.padding.drag_space",                  true);
// user_pref("userChrome.padding.drag_space.maximized",        true);

// user_pref("userChrome.padding.menu_compact",                true);
// user_pref("userChrome.padding.bookmark_menu.compact",       true);
// user_pref("userChrome.padding.urlView_expanding",           true);
// user_pref("userChrome.padding.urlView_result",              true);
// user_pref("userChrome.padding.panel_header",                true);

// user_pref("userChrome.urlView.move_icon_to_left",           true);
// user_pref("userChrome.urlView.go_button_when_typing",       true);
// user_pref("userChrome.urlView.always_show_page_actions",    true);

// user_pref("userChrome.tab.on_bottom",                       true);
// user_pref("userChrome.tab.on_bottom.above_bookmark",        true); // Need on_bottom
// user_pref("userChrome.tab.on_bottom.menubar_on_top",        true); // Need on_bottom
// user_pref("userChrome.tab.always_show_tab_icon",            true);
// user_pref("userChrome.tab.close_button_at_pinned",          true);
// user_pref("userChrome.tab.close_button_at_pinned.always",   true);
// user_pref("userChrome.tab.close_button_at_pinned.background", true);
// user_pref("userChrome.tab.close_button_at_hover.always",    true); // Need close_button_at_hover
// user_pref("userChrome.tab.sound_show_label",                true); // Need remove sound_hide_label
// user_pref("userChrome.tab.centered_label",                  true);

// user_pref("userChrome.panel.remove_strip",                  true);
// user_pref("userChrome.panel.full_width_separator",          true);
// user_pref("userChrome.panel.full_width_padding",            true);

// user_pref("userChrome.icon.account_image_to_right",         true);
// user_pref("userChrome.icon.account_label_to_right",         true);
// user_pref("userChrome.icon.menu.full",                      true);
// user_pref("userChrome.icon.global_menu.mac",                true);

// -- User Content -------------------------------------------------------------
// user_pref("userContent.player.ui.twoline",                  true);

// user_pref("userContent.page.proton_color.dark_blue_accent", true);
// user_pref("userContent.page.proton_color.system_accent",    true);

// == Theme Default Settings ===================================================
// -- User Chrome --------------------------------------------------------------
user_pref("userChrome.compatibility.theme",       true);
user_pref("userChrome.compatibility.os",          true);

user_pref("userChrome.theme.built_in_contrast",   true);
user_pref("userChrome.theme.system_default",      true);
user_pref("userChrome.theme.proton_color",        true);
user_pref("userChrome.theme.proton_chrome",       true); // Need proton_color
user_pref("userChrome.theme.fully_color",         true); // Need proton_color
user_pref("userChrome.theme.fully_dark",          true); // Need proton_color

user_pref("userChrome.decoration.cursor",         true);
user_pref("userChrome.decoration.field_border",   true);
user_pref("userChrome.decoration.download_panel", true);
user_pref("userChrome.decoration.animate",        true);

user_pref("userChrome.padding.tabbar_width",      true);
user_pref("userChrome.padding.tabbar_height",     true);
user_pref("userChrome.padding.toolbar_button",    true);
user_pref("userChrome.padding.navbar_width",      true);
user_pref("userChrome.padding.urlbar",            true);
user_pref("userChrome.padding.bookmarkbar",       true);
user_pref("userChrome.padding.infobar",           true);
user_pref("userChrome.padding.menu",              true);
user_pref("userChrome.padding.bookmark_menu",     true);
user_pref("userChrome.padding.global_menubar",    true);
user_pref("userChrome.padding.panel",             true);
user_pref("userChrome.padding.popup_panel",       true);

user_pref("userChrome.tab.multi_selected",        true);
user_pref("userChrome.tab.unloaded",              true);
user_pref("userChrome.tab.letters_cleary",        true);
user_pref("userChrome.tab.close_button_at_hover", true);
user_pref("userChrome.tab.sound_hide_label",      true);
user_pref("userChrome.tab.sound_with_favicons",   true);
user_pref("userChrome.tab.pip",                   true);
user_pref("userChrome.tab.container",             true);
user_pref("userChrome.tab.crashed",               true);

user_pref("userChrome.fullscreen.overlap",        true);
user_pref("userChrome.fullscreen.show_bookmarkbar", true);

user_pref("userChrome.icon.library",              true);
user_pref("userChrome.icon.panel",                true);
user_pref("userChrome.icon.menu",                 true);
user_pref("userChrome.icon.context_menu",         true);
user_pref("userChrome.icon.global_menu",          true);
user_pref("userChrome.icon.global_menubar",       true);

// -- User Content -------------------------------------------------------------
user_pref("userContent.player.ui",             true);
user_pref("userContent.player.icon",           true);
user_pref("userContent.player.noaudio",        true);
user_pref("userContent.player.size",           true);
user_pref("userContent.player.click_to_play",  true);
user_pref("userContent.player.animate",        true);

user_pref("userContent.newTab.field_border",   true);
user_pref("userContent.newTab.full_icon",      true);
user_pref("userContent.newTab.animate",        true);
user_pref("userContent.newTab.pocket_to_last", true);
user_pref("userContent.newTab.searchbar",      true);

user_pref("userContent.page.illustration",     true);
user_pref("userContent.page.proton_color",     true);
user_pref("userContent.page.dark_mode",        true); // Need proton_color
user_pref("userContent.page.proton",           true); // Need proton_color

// ** Useful Options ***********************************************************
// Integrated calculator at urlbar
user_pref("browser.urlbar.suggest.calculator", true);

// Integrated unit convertor at urlbar
// user_pref("browser.urlbar.unitConversion.enabled", true);

// Draw in Titlebar
// user_pref("browser.tabs.drawInTitlebar", true);
// user_pref("browser.tabs.inTitlebar",        1); // Nightly, 96 Above

// ** Scrolling Settings *******************************************************
// == Only Sharpen Scrolling ===================================================
//         Pref                                             Value      Original
/*
user_pref("mousewheel.min_line_scroll_amount",                 10); //        5
user_pref("general.smoothScroll.mouseWheel.durationMinMS",     80); //       50
user_pref("general.smoothScroll.currentVelocityWeighting", "0.15"); //   "0.25"
user_pref("general.smoothScroll.stopDecelerationWeighting", "0.6"); //    "0.4"
*/

// == Smooth Scroling ==========================================================
// ** Scrolling Options ********************************************************
// based on natural smooth scrolling v2 by aveyo
// this preset will reset couple extra variables for consistency
//         Pref                                              Value                 Original
/*
user_pref("apz.allow_zooming",                               true);            ///     true
user_pref("apz.force_disable_desktop_zooming_scrollbars",   false);            ///    false
user_pref("apz.paint_skipping.enabled",                      true);            ///     true
user_pref("apz.windows.use_direct_manipulation",             true);            ///     true
user_pref("dom.event.wheel-deltaMode-lines.always-disabled", true);            ///    false
user_pref("general.smoothScroll.currentVelocityWeighting", "0.12");            ///   "0.25" <- 1. If scroll too slow, set to "0.15"
user_pref("general.smoothScroll.durationToIntervalRatio",    1000);            ///      200
user_pref("general.smoothScroll.lines.durationMaxMS",         100);            ///      150
user_pref("general.smoothScroll.lines.durationMinMS",           0);            ///      150
user_pref("general.smoothScroll.mouseWheel.durationMaxMS",    100);            ///      200
user_pref("general.smoothScroll.mouseWheel.durationMinMS",      0);            ///       50
user_pref("general.smoothScroll.mouseWheel.migrationPercent", 100);            ///      100
user_pref("general.smoothScroll.msdPhysics.continuousMotionMaxDeltaMS", 12);   ///      120
user_pref("general.smoothScroll.msdPhysics.enabled",                  true);   ///    false
user_pref("general.smoothScroll.msdPhysics.motionBeginSpringConstant", 200);   ///     1250
user_pref("general.smoothScroll.msdPhysics.regularSpringConstant",     200);   ///     1000
user_pref("general.smoothScroll.msdPhysics.slowdownMinDeltaMS",         10);   ///       12
user_pref("general.smoothScroll.msdPhysics.slowdownMinDeltaRatio",  "1.20");   ///    "1.3"
user_pref("general.smoothScroll.msdPhysics.slowdownSpringConstant",   1000);   ///     2000
user_pref("general.smoothScroll.other.durationMaxMS",         100);            ///      150
user_pref("general.smoothScroll.other.durationMinMS",           0);            ///      150
user_pref("general.smoothScroll.pages.durationMaxMS",         100);            ///      150
user_pref("general.smoothScroll.pages.durationMinMS",           0);            ///      150
user_pref("general.smoothScroll.pixels.durationMaxMS",        100);            ///      150
user_pref("general.smoothScroll.pixels.durationMinMS",          0);            ///      150
user_pref("general.smoothScroll.scrollbars.durationMaxMS",    100);            ///      150
user_pref("general.smoothScroll.scrollbars.durationMinMS",      0);            ///      150
user_pref("general.smoothScroll.stopDecelerationWeighting", "0.6");            ///    "0.4"
user_pref("layers.async-pan-zoom.enabled",                   true);            ///     true
user_pref("layout.css.scroll-behavior.spring-constant",   "250.0");            ///   "250.0"
user_pref("mousewheel.acceleration.factor",                     3);            ///       10
user_pref("mousewheel.acceleration.start",                     -1);            ///       -1
user_pref("mousewheel.default.delta_multiplier_x",            100);            ///      100
user_pref("mousewheel.default.delta_multiplier_y",            100);            ///      100
user_pref("mousewheel.default.delta_multiplier_z",            100);            ///      100
user_pref("mousewheel.min_line_scroll_amount",                  0);            ///        5
user_pref("mousewheel.system_scroll_override.enabled",       true);            ///     true <- 2. If scroll too fast, set to false
user_pref("mousewheel.system_scroll_override_on_root_content.enabled", false); ///     true
user_pref("mousewheel.transaction.timeout",                  1500);            ///     1500
user_pref("toolkit.scrollbox.horizontalScrollDistance",         4);            ///        5
user_pref("toolkit.scrollbox.verticalScrollDistance",           3);            ///        3
*/

Additional context
I make use of the "Aero Lite" style in my Windows theme. Firefox's design is typically unaffected by this, but I figured I could mention it here.

[black7375]

When using the Automatically pick an accent color from my background option, there is a bug that appears brighter than the system color.
https://www.reddit.com/r/FirefoxCSS/comments/w9t89v/tab_bar_windows_accent_color_in_firefox_103/

I created an issue in Bugzila.
https://bugzilla.mozilla.org/show_bug.cgi?id=1783529
https://bugzilla.mozilla.org/show_bug.cgi?id=1796730

[black7375]

I don't know what version it was fixed in, but it seems to be working properly now.

[TCAtrevor]

Nice! Excited for the next Firefox release to finally solve this!

[black7375]

Now, this issue fixed with v8.5.0.

[TCAtrevor]

The title bar is still appearing bright to me after updating. Any config changes needed?

[black7375]

Thanks to feedback.
I'll reopen this issue.