the trick to lightsabers is the center of the blade is always nearly white, try reducing the saturation on the red blade but keep the red glow, you're pretty much there with ahsoka's blades.
Ahsoka's blades are different from Maul's.
If you can change just the core blade in photoshop it should fix it, depends on your PS skill, that would require too much precision for me I suck at PS. next time you render instead of making the emitter red try keeping it white but turning down the temperature to 1000K for red and 12000k for blue.
Personally I'd make it a proper mesh for the blades with a strong emissive material on it. Never worked on a lightsaber but a couple of renders ago, I did that with the neon circle behind the character. You'll spend some time with trying to figure out the emissive strength, but I think it's more accurate than photoshoping it. You'll get both the white core as well as the falloff that way. The radius of the glow won't probably be enough for your purposes and you'll have to adjust that in post, because daz is weird with the lights, but the blades themselves would look much better.
) there is a bonus picture for you.
A nude version, just in case
