I am not sure if I understand what you are asking, but I am thinking that you want a binding that has a variety of fabrics in it?
I would decide how much of each color I want. I would join my pieces together with a diagonal seam. Press the seams open, fold wrong side together and apply to quilt as usual.
The reason you want to join on a diagonal and then press open is to avoid having bulk wherever the colors join.
You might type "making quilt binding" into the search engine and search through the lists for good pictures of what I am trying to explain <g>
welcome, by the way <wave>