What color is your character's lightsaber?

Presently? It's a mist blue color. A crystal taken from Ilum a couple of years ago.

Before then? Well, his first lightsaber, which was given to him for his initial training, was a typical blue color. The first lightsaber he built himself was also blue. Both of these were synthetic crystals. Later, he went to Ilum to retrieve his first true crystal, and this time it was green. A little later, he found a stygium crystal, which he used temporarily; it produced a black blade. Eventually he went back to the green lightsaber until he attained the mist blue weapon he has now.

As for the future...

There's no real significance to any of the colors. The first two blue ones? I dunno, he liked blue. The black one was solely because I thought black lightsabers looked cool. The green, I don't have much of an IC reason, just a change of pace. The current mist blue one is slightly more significant in that it more reflects his cooler persona. That's basically it.

Currently, Viox wields an orange colored crystal in his double bladed saber. There isn't much significance behind the choice aside from not being a traditional Sith wielding red bladed weapons. Originally he had a double bladed red saber, though as I have worked to move Viox away from any canon connections, I felt as though that made him too much like his canon counterpart, Darth Maul. And having always found orange as an interesting lightsaber color, it felt very suiting to have his weapon reflect his uniqueness. His secondary lightsabers, both single bladed, are red and yellow. Again, no significance behind these choices either. One is a traditional Sith/Dark Side associated color and the other is a Jedi-related color from the KOTOR era. And that sums up the colors of Viox's weapons. Simplified version is he wanted to be different and stand out.

Blue. Rutil was trained and lived as a Jedi Guardian, and lives by that line of thought right down to the blade color.

Red-For those of you who have played SWTFU, you'll know what I mean when I say I chose a red uncompressed crystal as my primary saber. The blade with this specific crystal serves dual purpose. One, to entice enemies into thinking Cain is incompetent and cannot construct a proper functioning lightsaber, hiding his true intelligence and two, to reflect the true madness and instability his character harbors deep down.

Silver- A gift from his former master. Meant to reflect the bond often former between master and apprentice. Now it signifies the immense hatred towards his master.

Veridian- For those of you who have played KOTOR II, you'll know this color. No meaning behind this one, other then the fact that Cain keeps it as a trophy from his first NPC Jedi kill. A memento, nothing more.

Silver. To reflect Vallius' stance on the Force. He is neither Jedi nor Sith. He walks the difficult line of remaining neutral.

At the moment, Sihnyad wields a pair of sabers; one is emerald green while the other is sapphire blue. Much like what Rawkill said in the post above, the initial selection was based on the image i found to use as this character's avatar. However, with a bit of backstory (I haven't fleshed it completely out yet) it makes since as to why he came to use the green one, though his style is very much that of a Guardian as he is very melee oriented with not being as strong as many others in the force, though incredibly gifted in hand-to-hand combat.

Been rocking orange-bladed sabers since day #1 on the boards back in 08'. It's interesting to read about others having orange now that I'm gone.

Anywho... significance? Jud's blades are pre-Jedi Civil War, they are old, old enough that I figured there were far more crystals for Jedi to get a hold of and use. Also, seeing how the crystal chooses the Jedi I figured orange would be more an ominous color of things to come; unique in the fact that I didn't want him to go blue/green to red, too clique. So, in an era where the color of you blade was a badge, or a rank, or a title, I chose to give him a unique pair of blades that put him apart from both his Jedi brethren, and later his Sith counterparts.   

NINJA VANISH! *smoke bomb goes off*

I expected Blue and Red to be the top choices, but I'm a little surprised to see both Silver and Orange beat out Green.

Hurray for creativity and not just sticking to what's in the OT.