I was browsing through the 'gfx/effects/sabers/' folder and I noticed how each possible saber-colour had its own '_line' '_glow2' and how each shared the same blurcore and blurglow files. I was wondering whether its possible to create your own colours with the appropriate files and have them work in game with the 'sabercolor <bladenum> <color <color>' code. Any answers and/or help would be much appreciated

Have you seen the models/weapons folder? Maybe there's jpgs for each color saber. That's pretty much what you're aiming for. Basically color over jpgs.

There is no 'models/weapons' folder, at least not in JA or JO, there's a 'models/weapons2' but that only contains 'hilt models', not saber colors, and I'm not trying to replace the default saber colours in JA, I'm trying to create my own that can be used along with the default colors.

actually you'd have to do some code work to add additional colors.