Forgotten Star Wars game

I'm going to describe a star wars game and if you know it tell me the name. I played it a long time ago on the Gamecube, I think you could customize your character, you could change your lightsaber color and there were glowing stormtroopers or clones(I'm not sure).

I'd have to second Jedi Knight II. However, you played a fixed character and were not able to customize him. If anything, the game reminds me more of Jedi Knight: Jedi Academy(Jedi Knight III), where you could customize your character, lightsaber, etc. However, that was for the Xbox and PC.LuminousNoises

I can only think of the Jedi Knight game, but the Gamecube part is throwing me off.

Yeeeeeaaaahhhhh... I looked over my shelf, and that doesn't really match up on the GameCube. Are you sure you have the hardware correct?