Chameleon Color Tones is an innovative alcohol-based marker system that gives you the ability to change the color tone of your pen. Chameleon Color Tones come in vibrant colors that produce over 100 color tones giving you the ability to create stunning effects such as 3D, smooth transitions, highlighting, shading, gradations and blending, all with one pen. Double-Ended Pen has a replaceable Nibs.