I have a very large stash that’s sorted by color. The fabric is folded and stored in big plastic bins that are on shelves in a closet. The really large bins are on the floor. I don’t recommend it as it’s a real pain to lift the bins onto my rolling cart to pick out fabrics. I have the “specialty” fabrics (holiday, silks, Halloween, etc) in smaller bins so those are easier to look through. I also have the BIG problem of not cleaning up after projects, so every surface in my sewing room is pretty much stacked up with fabric.
If I could redo my storage, I’d have a drawer system where the fabrics are sorted by color. I don’t even have an idea of how much that might cost!