Decided to go with a weird alien purple base by dropping some Astrogranite and then washing it with Druchi Violet, then drybrushing some Genestealer Purple/Dechala Violet. I got some purple/pink tufts around somewhere that should look nice on them, but I wanted to test a Tyranid Paintscheme for when I do the models that have Tyranid stuff on their bases like the Terminator Captain.