I have a question on a tournament chip from "The Wynn Classic" that I acquired. It is 500 denomination, and the base color is purple. However, searching through some online pictures, I've only found a light blue base color for the 500 denomination (see below).

I'm thinking it is from a different series of colors (but then again the inlay is the same), or maybe the purple base chip is a secondary chip...

Does anyone have any idea?