Viens are too dark, how can I lighten them?

I did that with my Tristan and I ended up stripping him after he was all done for quite a while! It drove me nuts and after several paint layers if they are still that dark I doubt they will cover…hope someone else will be of more help but I would just go ahead and strip it now rather than getting any farther like I did. Unless you want to try a darker skin tone for a couple layers and see if that covers it more…good luck!