Is there ANYTHING I can do to help my farmers tan?

The weird tan I'm getting from being in the sun during sports, with my shin guards an my long-ish shorts is making my knees super tan and the rest of my leg not so much. Also, my jersey has sleeves that go down pretty far, so the top part of my arms is pale, where by the lower part is very tan. I tried to fix everything today by going outside covering up my knees while I tanned a little (I know it's bad for you, but I was just trying to fix the weird tan line.) I ended up not covering everything right and not I have two pale stripes on my legs. One a bit above my knees and the other a bit below them. It's kind of funny actually, but obviously not good. Any ideas? Any lotions or anything? I'm running out of ideas.