Hmnn. Obi-wan's master as a Lux? Great idea! Would you stay with green since it was his saber color?
I also play with Silver, Orange, Red, Green, Blue, and Purple dual blades in KOTOR II. In Kotor I my favorite is twin Blue.
Aaack! I too can see having two dual Mauls!
I've been thinking of the Trilux "Endor Star" set to white-then using color filters. Should still look bright- and give a nice light purple!