Sprites pool
From X-Moto
Here you can find the graphics files for the X-moto rider. They are in .xcf Format, so you can use Gimp to edit them, and use them as a base for your own themes.
Media:Open_Body1.xcf
Media:Open_LowerArm1.xcf
Media:Open_LowerLeg1.xcf
Media:Open_Torso1.xcf
Media:Open UpperArm1.xcf
Media:Open_UpperLeg1.xcf
Media:Open_Wheel1.xcf