I caught five strange queens with translucent yellow gasters, and their thorax/head is a dark red that almost looks like the color of Pogonomyrmex barbatus. I also caught 13 Pheidole sp., and about 10 unidentified harvester ant queens. Ants Galore, it's the species you have. No sightings of Crematogaster in Katy so far. If anybody wants a free Pheidole queen, I'd be willing to give out alot. My pool light usually attracts about 40 a night.
You should post some photos in an ID bread of your strange queens. Do you have anything to go on other than coloration? How big are they? Do they have a postpetiole?
I can try to ID but my camera is terrible at focusing up close. I can tell the queen is fully claustral, and I'm going to wait until she has workers before I ID her. Trust me, if I tried to take a focused picture it would be like 360p.