@summergrand
I’m looking for something similar… Could you share the fix you made?
I can only assume the issue is with the theme for the site I am working on (which was “built” by another developer before me in a not so by the book manner). I installed the plugin on another wp install with a different theme and it worked fine.
To use the plugin for the site as is, I manually added the colors into the db table, “wp_ai1ec_event_category_colors”.
INSERT INTO DBNAME.TABLE NAME (term_id, term_color) VALUES (‘CAT ID’, ‘COLOR ie #000000’);
Not really a solution, but such is life….