User blog comment:RnR/Blue or Yellow Lightning?/@comment-29564364-20171026192257

Well blue and orange are complimentary colours and the contrast between them would make the elements more distinguishable and visually appealing when used together while yellow and orange are both hot colours, which also makes them look good together. If it's just for looks, I'd go with blue lightnings. Otherwise, my answer would vary depending on the character's appearance, personality, role in the story and what the colours and elements represent in your setting, which I lack information on.