You should do the rest of the Star Wars Saga, or not.
Qui-gon Jinn’s lightsaber (Green)TPM
Mace Windu’s lightsaber (Purple)AOTC
Obi-wan’s lightsaber (Blue)ROTSKylo Ren’s lightsaber (Red)TFA
I don’t know which lightsaber to use for TLJ, as Luke’s Blue lightsaber is used for ANH, and his green one is used for ROTJ.
TLJ is a bit tricky as Anakin’s saber is the only one featured aside from Kylo’s. I say repurpose Anakin’s saber but have it reflect the first TLJ poster where the bottom is blue and transitions to red as you go up the blade.