Attempted SG!Trailfire from my fic The Mind Electric
Didn't turn out very well. The color options were poor, but something flamelike was the goal, or maybe flame decal. Or both.
SG!Trailfire is a creepy neutral mnemosurgeon who enjoys altering bots' minds without them even realizing it. Megatron feels forced by the circumstances to hire her to shadowplay somebody, which might turn out to have been a mistake. She's a spaceworthy alien jet that leaves a fiery trail behind it, and has somehow come in possession of a rare and valuable object: a scrap of fabric. She thinks it makes her look important and powerful.
Fun fact, there's no NV!Trailfire because i made her for The Mind Electric, which is entirely set in Shattered Glass universe.