When I first started quilting, I knew I loved scrappy quilts (still do) but everything I picked looked the same- colors and styles.
This was a long time ago, but I forced myself to buy all the remnants in quilting weight cotton that were under 1 yard when I went to the store. I got some fabrics I thought were hideous, but a little bit in a scrap quilt popped. It forced me to have a variety and it gradually became easier to see the values in "out of my comfort zone" fabrics.
Now my husband will occasionally see something I've bought and gasp, but when it's in the quilt, he likes it.