Given the customization available for sections/groups and drop-downs within boards, it’s VERY hard to believe that this has not been addressed yet. My calendar is auto selecting orange and red for my two main projects which makes me thing they are all on fire/running late. Another project is a dark brown with black text – I saw another user mention they have that as well – and it is really difficult to read.
Please make manual color selection available for calendar dashboards!! Second option would be manually selecting colors for boards that can are reflected across the whole monday interface/widgets.