I noticed my bird stretching his leg and wing and noticed a red veins on the upper part of the wing. I'm just wondering if this is a normal thing for light colored budgies?

There is an area on the front part of their wings that I have noticed. When they stretch, you can see down to their skin. The first time I saw it, I thought it was bleeding. Now I see it all the time. But I doubt if I could get a photo of it!

That is the vein I'm talking about. Is it more visible on light colored budgies then darker ones, or visible on all budgies?