Question on Electronics (I know there's a section for that but it has very little foot traffic so I figured I'd ask here)

My Reventon R ESC's leads are a hair too short and I'd like to solder on new wire, but was looking for a specific color that by luck I found, only it's 14 gauge. The stock wiring on the ESC is 14 as well but I was wondering if there's an advantage to going with 12 over 14. If not I can order the wire right now and solder everything up once it arrives. I think it's will make my ride look so much sharper and totally unique.