VersaColor is a fade-resistant pigment ink. Available in a huge variety of colours, it dries reasonably slowly, making it ideal for embossing.
Alternatively you can use the inkpads for the direct-to-paper technique, or use a wet paintbrush or waterbrush to draw colour into an image. However they're not suitable for use on non-porous surfaces (such as glossy card, acetate or vellum) unless heat embossed.
The pads are easy to clean after use.
This pad is in the canary colourway.