Quilting with Embroidery Thread

I'm nearing the finish line on my wool bird applique quilt.  I added a cotton border and machine quilted it.  But I wanted to hand quilt the central wool panel.

I had some beige hand quilting thread, perfectly matched to my background.  See the line of stitching below the branch?  Hard to see, right?  I didn't like it and wasn't sure what to do.

Then I thought why not try embroidery floss.  See the line of stitching above the branch?  More visible, with a nice sheen.  I like it.  Luckily I didn't do very much with the quilting thread, so there's not that much to rip out.