Hmmm, tough to call. Probably more saturation and tones than actual colour choices. If my personal opinion is of any merit, you could go either lighter + less saturated with the pink for a less contrasting environment, or darker / more burgundy for a slightly more morbid vibe.
Don't get me wrong, the colour choices are very very good. It's only my personal opinion. I had to really analyse it before I could come up with any criticism whatsoever. I feel your work deserves it!