So me and my colleague decided to combine our sabers - a Guardian in GB and a Dark Shock in BR. For no reason, really (long lunch breaks will do this to you...)
Anyway, other than being a Frankensaber/staff, we think the color combination is cool if you think about the sabers - Guardian is TPM Obi-Wan, whereas the Dark Shock is your sinister Sith looking hilt (War Glaive also helps!). So the color range from GB to BR represents the Force spectrum. Or not

Below you can see it in action. I especially like the sounds merging, so that you can hear Vader's breathing in addition to regular clash/spin effects.
The hilts assembled


For scale (a bit angled)

Lit-up

The freebies are watching from the opposite side

The gang
