I need the functionality for setting a color upon injecting an item to a BuildCraft pipe for reimplementing RP2-like sorting peripherals in my mod, Computronics.

I believe this was discussed in #1479

Yes, but that was in March.

I have made a patch to support this.
@SpaceToad what branch should it be submitted to 5.0.x 6.0.x 6.1.x?
And how would you react to me moving EnumColor from core to api?

Would be good than we do not have so much classes doing the same thing.

@simon816 this is a new feature, so needs to be submitted for 6.1.x

@simon816 and I don't see any reason why not to put enum color to the API if needed.