If you're willing to go through an inordinate amount of data, you can check the PSU pinout and connector keying to see if two models have a compatible layout. I should point out that I haven't run across that yet, and I go through these things regularly.
If you want custom sleeving, cablemod is good, as is moddiy:
https://www.moddiy.com/
If you want to make your own sleeved cables, that's an entirely different question with a much more complicated answer.
UPDATE: If you tell us what PSU and what color scheme, I can point you towards the compatible cable sets.