I didn't really like the teal afterburners, so i photoshop'd them orange. Then i sort of got carried away and changed all of the thruster glows and afterburner trails. With the permission of the people who made them initally I will post screenies and a pack, till then, heres what i did:
-Increased brightness, not too much to be washed out, but they look more powerful
-increased width of burner trails, again with the power, but these got a little washed out
-made afterburners orange, so that they match the trails. I like the firey glow of orange better than green for some reason.
I just used photoshop and ran some filters over the original improved ones, if you want screenies, yell at me.