I've been pumping my penis for a while and during the process, I was having a full erection so didn't think much about the pain as it was pleasant in a way. So kept pushing it to a bit of an extreme. Apparently the pump I used wasn't of good quality, so it left a big piece of my penis with dark skin. I think it's due to blood vessels burst under the skin. Now it doesn't hurt or anything, but it looks ugly to me as almost half of my penis skin is dark (brownish) with tiny light dots. This hasn't changed for a couple of months now as I thought it'll disappear on its own, but it didn't. Any ideas on how can I find a way to fix that and have the original skin color?