Rimu on Nostr: It'd need to be two colors - one for light mode and another for dark. ...maybe you'd ...

It'd need to be two colors - one for light mode and another for dark.

...maybe you'd need a corresponding text color too, for when the accent is used as a button background, etc. A light and a dark mode text color.

...and then again, many clients have multiple themes with different color schemes. It'd be hard to ensure the custom accent looks ok on all of them.