Add Chameleon Colour Tops to your Chameleon Pens to get over 1000 colour blending combinations. Simply pop a Chameleon Colour Top on top of a Chameleon Pen.Rather than blending two colours on the page, blend colours at the source (nib), for beautiful, smooth and seamless colour to colour blends. Even opposite colours like orange and green can be blended together without a seam!PLEASE NOTE: FOR USE WITH CHAMELEON PENS - PENS NOT INCLUDEDFeatures & Benefits Achieve tonal gradients, blend opposing colours or get creative and stack numerous Tops to achieve amazing blends Add Chameleon Colour Tops to your Chameleon Pens to get over 1000 colour blending combinations! Professional quality, with alcohol-based ink Refillable, and have replaceable Japanese Nibs Permanent on most surfaces (including: fabrics, glass, plastic and wood) Compatible with all other alcohol-based pens and inks Specification Colours: Neutral Grey 4, Cool Grey 5, Cool Grey 9, Warm Grey 3, Warm Grey 7