Here is a scan of the Showboat, Las Vegas free-play chip that was in Doug's auction last week. In normal room light, it looks almost black. I lightened the scan a little bit to show it actually has blue in it. TCR lists both a dark purple and a navy. I suspect there is only one variety, but on the chance that someone has both, thought I would post here. I'm going to call this chip navy unless someone has some other input.