Thanks for the help, I tried that but it looked at least perceptually identical. Good call though, I can see this come in handy when troubleshooting in the future. I also brought it back into other software (Nuke in this case) to make sure my TGA was correct and it was fine.
What did end up working was adding a tiny bit of glow on the blue and purple fonts. It does seem like a premultiplication issue though, possibly assuming the alpha is in a colorspace it actually is not in… Unchecking the sRGB option did make it look slightly better but still an obvious issue. Not sure what else it can be. It’d be interesting to hear more about this still, I can see this coming back to haunt me. I do have a thing for glowy things.
Thanks again Darth! Hope you guys have some better luck this coming Christmas, those pesky rebels always seem to get away with anything.