The Western Color Scheme is one of the two most common color schemes for the Rubik's Cube (with the other being the Japanese color scheme). As far as officially produced cubes go, the Japanese color scheme came first, but this has been the color scheme of choice for official-brand cubes in North America and Europe for many years.
This color scheme is also known as BOY, short for Blue-Orange-Yellow, for the arrangement of colors around one of the cube's corners; or Minus Yellow, referring to the relation between each opposing sides' colors, as described below.
One interesting thing about this color scheme is that the color of any side, plus or minus yellow, equals the color of the opposite side.
Cubers who use the Western Color Scheme (with the Fridrich method) typically solve with a white or yellow cross, which gives a white or yellow last layer. Unlike cubers who use the Japanese color scheme (again with the Fridrich method), usually use a blue cross.