I have this weird pet peeve about full tops. I don't like when the waistband is the same color as the uniform base because it begins to look more like a school uniform well at least in my eyes, nothing against school uniforms but I want an Allstar uniform to look like an allstar uniform, not something I could potentially see on the field in a few years. Having a colored waist band and colored band under the chest just gives it that little edge that doesn't make it looks so "hi I am a trendy school uniform" and in some cases , it makes "bigger" athletes look thinner since you are focusing on the pop or color rather than a stomach.
Now with the Leo and bodysuits trending, I hate normal full tops that don't tuck in. Mainly because when I see kids compete and their stomachs show under their full top that flipped up, I immediately focus on that rather than their motions and they always mess with it to bring it down.
But once again that's just my opinion.