Went with the purple carapace color to match the 'stealers, and besides what better color to paint the cult's Pimpmobile than purple and gold, after all?
Not entirely happy with how the windows are coming along, I'm thinking I'm going to go a different route and try an orange-ish/false horizon look to try an emulate a polarized/mirrored window effect that will match the orange jumpsuits on the cultists, sort of like the pic below:
I think that'll set off against the purple better when all is said and done!