Hi, I've been trying to stop my genetic norns that i'm making from changing colors as they get older. Is there any way that I can get rid of the pigment bleeding?
I'm not an expert on genetics, usually sticking to the "caotic" side of development, but I can empathize with what you're dealing with; pigments are tricky to work with.
There is a tutorial here which may be of use, although I must warn you that--despite what the tutorial says--you must not delete any of a Norn's genes. Deleting genes simply leads to slider syndrome when that Norn breeds with others that have normal genes.
Fortunately, you can literally "turn off" a gene without having to delete it. Each of a Norn's genes has a special toggle; in the Genetics Kit this appears as a check box at the top of the gene editing window, which says "Do not express (carry)". If this box is checked, the gene still exists in the Norn's genome, but lies dormant. Its effects should not be observable on the Norn.
I hope this helps as a starting point and wish you the best of luck with your project!