Buttons on dark background

[cherylhjli]

Is your feature request related to a problem? Please describe.

Currently we don't have primary and secondary buttons designed specifically for dark backgrounds.

Describe the solution you'd like

In the states table, preview here:

Describe alternatives you've considered

Also considered using blue 200 for the primary button, and while that looks good when dark mint 500 is the background, it doesn't look as good or provide as much contrast when it's paired with blue 500, which is the dark background that's used most in the screens right now.