[Caden]

I dunno I kind of just like the original 5 and they seem to stand for each type of jedi.

Lavender - Spirituality and healing. Independent jedi who may offer their services to medcenters or mobile medical units.
Green - Harmony and growth. Scholars and diplomats who possess great knowledge of the Force, often becoming instructors.
Blue - Peace and Combat. Notable Guardians that may act as a kind of special police for the Republic.
Yellow - Caution and endurance. Dispatched to understand life's potential and investigate unusual concentrations of the Force.
Red - Naturally red represents blood and fire, so it's chosen to represent the Dark side of the force.

Orange and teal, I believe are just variations of yellow and green... which I guess variations are nice, but I believe they still mean the same thing.

I also heard that at IMDb it says on episode two, Windu's lightsaber was purple after the actor requested it because he thought it would look cool and so he was the first to ever use a color other red, green or blue in the movies.

Oh I prefer the lavender with green as a second choice.