@Yuki Are you interested in triaging colour contrast issues with the Forgejo themes (see https://codeberg.org/forgejo/forgejo/issues/?q=&type=all&sort=&labels=81214&state=open&milestone=0&project=0&assignee=0&poster=0 for some related issues) and potentially fixing some of them?

Also see https://social.anoxinon.de/@Codeberg/112373314695977821 but it might or might not be problematic if two people work on the codeberg theme simultaneously.