@ Jacomina ... yes, it also means "Complimentary" colors, which is sort of backwards, but means the same as contrasting.  Things that are opposite on the color wheel.  Red and green, purple and yellow, blue and orange ... they're all wonderful combinations! 

I'm looking forward to this.  It should be a great challenge!

"If your pictures aren't good enough, you're not close enough."  ...  Robert Capa