I've received so much positive feedback about my colorful resources and always get asked how I color my resources. Honestly, there's no secret! I just love to use the twistables! I love how easy they are to use and that I don't have sharpen them. Just twist and go! My coloring resources below were all used with the twistables. I recommend buying them from Amazon because they come in a bigger box for such a great price. You can check it out HERE.