These ships are called Salamanders. So how could I not paint them in GW's Salamander Space Marine Chapter color scheme. I've always had a knack for painting flames. I've painted Salamanders in Warhammer 40,000 scale and even my Inquisitor model was painted as a Salamander.
One of my pet peeves is people who play Salamanders and don't paint flames and/or scales on every model. Now-a-days GW has special shoulder pads and what have you for many chapters whereas in the olden days you had to free hand everything for the less mainstream armies/chapters.