I sure do! I'm usually pretty careful that they fall into my 'favorite colors' category, or blend with my home or someone else's that I may make a throw or wall hanging for birthday/Christmas gifts. I have a portable filing cabinet full of purples when my daughter was 'in' to purples. Now that she's moved on to 'aqua', at least most will blend!
I rarely purchase from Joann's anymore, it used to be my favorite place to be for quilting fabric and other 'crafty' stuff. The prices there, while lower than the traditional quilting shops, are still higher than I can find online with Quilt in a Day and other websites. Happy Piecing!