HL material is used all over the place. But anyways, I'm pretty sure that the Aperture logo is not copyrighted or anything. It's not the game logo or anything.Sounds interesting.
Maybe you should check if it is okay to use material from Half Life.
Repaints are easy once you get the hang of it, I suggest you check out Gimp and it's .dds plugin, both free.
Copyright is automatic, you do not need to apply or register for it (in most countries anyway), unlike trademarks. Some quick Googling indicates that the copyright would belong to the game developers/publishers: Valve Corporation and/or Microsoft Game Studios (unless they have transferred it to someone else in the meantime).HL material is used all over the place. But anyways, I'm pretty sure that the Aperture logo is not copyrighted or anything. It's not the game logo or anything.
They might mind, or might not. You don't know, so ask them, or ask a lawyer if you don't want to ask them. IMHO, I doubt your Aperture Aerospace work contains enough tranformativeness to extinguish derivative work liability. The rules differ from country to country so I suggest you do your own research. I strongly recommend against not doing the research and just assuming that it will be OK if you give credit.Well, I'm not going to be making money off it, so they shouldn't mind. Plus, I will give credit.
Never mind, I figured it out. Textures now work! I JUST MADE MY FIRST ORBITER MOD!!