Texture Darkens in BGE

Hopefully this is the right section,so…
The Picture on the left is in object mode, and the picture on the right is when i play.
As you can see the arm is darker, Why is this, and how can i fix it?
Please note, there are NO lights in this scene, and the arm is a separate object.
Thanks.

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Did you try recalculating normals and remove doubles?

Ya i tried it. I figured it out. I had a mirror modifier on. I guess that did something weird. Its fixed, thanks.