How to describe color patterns?

You may just use below method in Order Remark:

24pin Main = BBBBRRRRBBBB
8pin PCIE = BRRB
6pin PCIE = BRB
5pin SATA = BRRRB
(B=Black, R=Red)

24pin Main = BBRRWWWWRRBB
(B=Black, R=Red, W=White)

Updated on: 02/11/2020