Their design is a little edgy so I'd go with it. I'd choose a printed shirt and the rest of the outfit dark or neutral. Black shorts, no jewelry or black minimalist one. Feminine but defintely not delicate or romantic.
For the second one, I'd use kind of the same idea, playing between feminine and masculine, using masculine pants and an ultra feminine top- a sheer one or a lace one. I'd try to keep it simple with accesories, all eyes would be on the shoes, anyway.