kits

If a team was playing in a dark colour and I had to use another kit (the new yellow/green nike one), but that clashes with a keeper, what would be the best thing to do?

I have had one of the most bizarre games in my entire career today. Division 1 U12 game, home side wear royal blue (shirt, shorts, and socks), and the away team appear with a dark purple kit (well, the socks were white). I could only realise this some 40 minutes before KO, and dealing with this...