Not gonna lie when i was younger id dream about if i had a lightsaber and thought about all the colours that are yet to be used; black, silver, gold (not the yellow they tend to show), bronze was a favourite idea but so was white because while its hard to picture a black lightsaber i think its harder to picture a white one, when i was really pushing the boat i thought multi coloured might be even better.
Anyway just a tad off topic at least you have 7* Lumi i still dream of having a 7*