You already allow theming of fonts and spacing at the template level but one major piece lacking is color theming.

Problem with current approach : we can define colors at account level and apply in theme. However updating these colors does not update the template or modules.

Solution part 1:

Allow us to name colors and then use variable names instead of hex values if desired.

Solution part 2: Allow overriding of the account colors at the template level. this way we could implement different color themes for our templates without redesigning and duplicating every module.