Bruising vs Discoloration from Pumping

I’m still fairly new to all this, so please correct me if I’m wrong.

Discoloration is when the penis as a whole is turning darker and is mostly uniform in color as it happens. Since I’ve been pumping for about 6 months, I’ve noticed my whole unit getting slightly tanner, with a bit more color around my circumcision scar.

So then bruising would be much more localized and darker splotches of skin without much uniformity, right?

I’ve been dealing with much darker areas of skin on the underside of my shaft, extending about half way up to the glans. It seems to be localized around veins and blood vessels, and looks way worse when flaccid while the skin is compact. I’ve been doing the firegoat rolls, but it doesn’t seem to help these dark areas. I guess in the past few months I haven’t been paying much attention to it, so it kind of took me by surprise with how much darker it is compared to the rest of the skin. There’s no pain associated with it, and I was only pumping at 2.5inhg with jumps to maybe 4 here and there for the last few mins of a session. Does it sound like bruising?

I’d like to keep pumping, but I’m at the point where I don’t want it to look any worse than it already does. I’ve been reading through threads on using chemical peels but it has me kind of nervous going that route. If it’s bruising I know it will fade eventually, but that could be 6 months or more with no PE. I’m wondering if I should try some of the more mild options like arnica gel or amlactin before other things like DMSO or crazy strong peels.