The yellow is a buttery gold but remember Bonnie does scrappy so she will have many different fabrics of the same color family in her quilt. If it looks like aqua, it goes. If it looks med to dark pink it goes. If it looks grassy green it goes. As she said black is black and neutrals are anything lighter then a brown paper bag. It's fun so don't stress over fabric. When you are done you will have a quilt top made out of your stash. Isn't that better then having the fabric stuck on a shelf or stuffed in a bin? Yes!