I agree with Ichigo-- those characters have two totally different colours, and unless you dye the wig, I don't think one is going to work for both.
Going to con with only one cosplay can actually be a lot of fun, though! If you're really not up for that, though, you could always pick a cosplay that would make use of your natural hair.
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- Sailor Jupiter (Sailor Moon): 6% (Patterning) Katsucon 2016
- Honoka Kousaka - Uniform (Love Live): 90% (Final Details) Summer 2015
- Labelle (Animal Crossing New Leaf): 19% (Sewing) AniMore 2016
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