These guys seem to suffer terribly in unit reviews online, but as my mate and my, normal Imperial Guard playing styles are just so similar I needed something that would set us apart. Just for reference, we both favour lots of troops with no heavy weapons in infantry squads, lots of Leman Russ battle tanks etc with the only real difference being that he has batteries of big guns that I just can't match.
I painted the models in colours that I felt would compliment the bulk of my troops, the same colour jackets and trousers, with the dark blue to match the Mechanicus element of my force*. This unit would be unlikely to be native to my guard's home planet so I decided not to go the whole hog and convert the gas masks (in my fluff the gas masks are due to them not tolerating other world's air as their own is so weird, rather than needing them because of hazardous conditions).
Thanks for reading