The grips on my legion have discolored in several places, turning a bit darker. Mainly near the seam along the back strap and around the top near the slide. I remove the grips when I clean it so I dont think it's a chemical issue (I ride a motor and see rain quite frequently).
I haven't contacted Sig yet but will soon. Anyone else have any issues like this?

The grips on my Legion were initially spotty due to drops of oil.

I just rubbed them with Ballistol and blotted off the excess to even everything out.