When I started quilting I changed my thread color with each project I started. Accumulating a lot of thread. I have changed in my thinking, I use white or off white and have black, but I still have all of the other colors. Now I am going to start using them up in piecing. I have found even with quilting, that I use a neutral thread, it does not seem worth it to me to buy matching thread. And I do as someone else mentioned, load up 4 or more bobbins, less frustrating when I am sewing and have to change bobbin.