These are beautiful, really.
I just have one little problem:
"...vest color is always following the skirt color..."
"...tie color is set with the 2nd top RGB Slider..."
Is that the only thing you have the Top RGB2 slider doing? The necktie? This basically makes it impossible to color the vest independently of the bottoms. It's a bit confining.
Perhaps you could do one down the road where you hook the Tie to the Bottom RGB1 instead of the Vest (since most of the Vests don't even have ties), or maybe have the Tie use one of the Collar RGB sliders. Either would free up the Top RGB2 for the vest.
Other than that, they're fantastic.