After Customizing one of your existing themes and adding content, if I decide to change any colors I have to manually update each card. Suggestion would be to allow choosing colors for content types in the theme setup (instead of adding non-specific accent colors). If I assign "heading 3" a color and later decide to change it, I do so in the "edit theme" section and then the new color should apply to all "heading 3" content in my exisiting presentation or site. Thank you