Christian Louboutin, the french footwear designer has done a remarkable job of branding. I am not a fan of big designer logos on products, and Louboutin has created a way for everyone to know the shoes are his, his signature shiny, red-lacquered soles. Brilliant!
It seems it was a bit by accident though...
"In 1992 I incorporated the red sole into the design of my shoes. This happened by accident as I felt that the shoes lacked energy so I applied red nail polish to the sole of a shoe. This was such a success that it became a permanent fixture." - CL