Hi,
thank you for reporting this problem! I am sorry, I had added support for transparent colors to allow free events to be displayed with a configurable amount of transparency. However, this accidentally caused problems regarding some other colors. I will upload a new version probably later today to fix the problem with the keyword colors, too. Please try it again with that version.
Thank you very much! Please tell me if you find any other problems or if you have any questions!
Kind regards
Dominique