Powerhouse users can set a color used in the feed's buttons. The button appear on the subscription page, the invitation email, and embeddable player.

Flip the switch for Custom Feed Color to bring up the color selector tool and example button. You can click your color, or type the Hex, RGB, or HSL values. Click Save Feed once you've found your color.

This is a per-feed setting, so you can have different colors for different feeds.

You'll find a preview of the color in the feed details tab inside your feed. If you want to change the color, Click on Edit and update your choice.