The BNSF paints its locomotives in schemes derived from its predecessor railroads. Many locomotives are painted in "Heritage I" or "Heritage II" schemes, which are based on the Great Northern Railroad's colors of green and orange. Others are painted in "Heritage III" which is the Santa Fe's famous silver-and-red "Warbonnet" scheme, but with BNSF on the sides instead of Santa Fe. These make the BNSF one of the most colorful large railroads in North America.