Such strange colors....I absolutely love it. So much of the time, I feel like people post sets that are "almost great", if only they'd have done it a little differently, or added something extra. This set has already found it with the colors, it's awesome.
It's got the high contrast look of black and white, but with far more "pop". It may sound strange, but I think if it as a cousin to Super Mario World's Fire Mario/Luigi.
It's always so hard to tell what colors truly resemble, especially since I don't have a great monitor right now... would you say the photo of the sample is closer to the real life color? When I saw the mock-up I felt rhat maybe the brown could be a tiny shade darker, like ultra-dark chocolate, but looking at the plastic sample it does indeed appear to be perfect.
