The jersey system is still a bit dodgy. I would love to know how it determines a colour clash. Take these two setups for example:
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I have added many colour configurations to my game setup, and the left game would be a bloody mess to play. However the game setup detects no clashes. The rightmost game setup has a clash with FrEleanor and Robert the Bruce, even though to my eyes, the light blue/pale yellow and medium blue/white are quite easy to tell apart. I would love to know how this was determined. I would also love to have the facility to override so-called "clashes" in player colours.
And yes, I specifically set up the left game to try and get as many similar coloured civs in one game as I could.