When looking through the 520 "Orchid" images at Acclaim Images.com this A Yellow and Magneta Orchid Against a Black Background was a favorite.
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Description:
A Yellow and Magneta Orchid Against a Black Background
A brightly colored magneta and yellow arom gold changmark orchid from Thailand of the cattleya species

Some related terms for more images:
paul whitehead,  flowers,  red,  plant,  cattleya,  arom gold,  magneta,  orchids,  orchidae,  thai orchids,  changmark,  plants,  orchids of thailand,  colourful,  yellow,  colorful,