Heading for Oxford Circus on the 137 in October 2010 is VDL DB250LF Wright DW90 (LJ04LGE) stille sporting cow horns in its original livery.
At the same spot by Hyde Park Corner on the same day and on the same route is DW62 (LJ04LDC) which has clearly been in for a repaint. The cow horns have gone and even the silver grill has been given the all-over red treatment - there seems no escape!
Also at the Hyde Park Corner stops in Knightsbridge that day, but on the 19 is repainted DW67 (LJ04LDL).