You can set your site colors using the Gecko Customizer -> within the Global color category, in order to apply them across your entire site.

Primary colors #

Base colors are used for important elements like action buttons, alerts, progress bars, or active element indicators.

Alt colors #

Alternative to primary color. Default color for community ‘Join button’, one of the Gradient colors and some small UI elements.

Gradient colors #

Used as default gradient widget colors. (maybe on more elements in the future)

Info colors #

Info colors are used for default alerts.