I have an Rjays storm jacket (the red one), and I bought some of the leatha oil stuff (in the yellow bottle) to maintain it. So last night I apply it to the jacket. It goes on well to the black and white bits, then I apply it to the red bits and some of the red parts of the jacket start showing black, as if the leather is literally changing colour. I carry on as it was too late at that point to stop. I didn't really mind provided it was all the same shade or colour. I finish and look at the black blotches on the red parts of the coat (the white parts are fine). I hang the coat up and this morning they have virtually all gone. It seems to have dried out or whatever. Has anyone else seen this with their leather bike gear?