Decrease theme colors

[MikeLockz]

Audit the theme colors and find ones that can be removed.

Also, consider adding variants for action colors that do not rely on opacity but instead change the hue via a color transform function like lighten (success-light).

Acceptance criteria:

• theme should only have appropriate colors

E: 1/2D

[MikeLockz]

This should also get reflected in the Figma kit.

[MikeLockz]

@gesquinca - does it make sense to rename to abstract additional color names to something less tied to color and more tied to function? When I want to override the color of the button text, instead of using text I have to set white: "black" which feels weird. Should there be a new theme.colors.buttonText value?

[gesquinca]

@MikeLockz yes it does. That's why we added these values to the theme recently.

https://github.com/ConsenSys/rimble-ui/blob/master/src/theme.js#L7-L8

This doesn't apply to button colors, but it applies to text color in the page as a whole.