I've noticed this too and I couldn't quite put my finger on what was wrong. This explains it perfectly. Someone please take a look at this.
You do have the same issue, since it's a bug that is there for everyone now I believe. But from what you wrote I can tell why you've had more than one color+ grey. You simply forgot to change your Tag-Colour.
alxnr wrote:I experienced this too.
Sometimes there are even more than two colors other than grey and your combo color, and it made me confused :/