Animate fires redundant ThemeColorChanged events

[Inventsable]

Related to #265, since Animate doesn't allow you to differentiate between Dark/Darkest and Light/Lightest, I figured a good workaround would be to do this on every app theme change event:

1. Compare appSkinInfo's inaccurate panelBackgroundColor's value to tell if a Dark/Light theme
2. Compare the panel's current background color -- if appSkinInfo claims dark but the panel is already dark, it must have been a change to the close sibling (from Darkest to Dark, etc).

This works perfectly until you hit the OK button. In Animate alone, each of the following causes a ThemeColorChanged event:

• Selecting a new theme from the menu dropdown (Correct)
• Hitting Cancel to revert from selected menu dropdown's theme to the prior theme (Correct)
• Hitting OK to confirm the new theme (Incorrect)

This behavior isn't present in any other app that I can tell, shouldn't be present since the appTheme has already been changed and this is simply a confirmation which adds no functionality not already handled by the menu/Cancel events, and unfortunately breaks what workaround I did find for the previous issue.