I login to Lemmy on different container tabs in Firefox on different accounts, and I use a different theme on each to make it a little easier to recognize which account I’m on. I’m using the default purple, another is a nice warm blue/green, another is a red like you mentioned.

I’ve been wanting to add more theme options at some point, I think it’d be really cool when you can customize other things like link colors etc.

I’m doing the same with the slider to the left, but I’d prefer more of a grey scale I think.