you should be able to color all your projects.
Please tell me:
- Which browser are you using?
- Does this issue also occur in a different browser?
- Are you accessing Todoist directly through the website or through a plugin (if so - which one)?
- What happens exactly when you try to color a project? Do you see an error message? Can you click on the color field?
- When you click on the color field, do you see the small loading circle at the bottom right corner of the TODOIST logo at the top of the site?
Also, please try to clear your cache and/or force-reload your page using Ctrl+F5.