Vibrant drawing by Ester Roi (http://esterroi.com/), made using coloured pencils. Roi uses what's called an Icarus Drawing Board technique where wax-based media (ex. coloured pencils, crayons, pastels, etc.) are used to draw a picture, after which the drawing is exposed to heat that softens and melts the wax, creating a visual effect similar to a painting.
Colored Pencil Painting, The Artist's Magazine, Arlene Steinberg
Arlene Steinberg - colored pencil and Caran d’Ache Neocolor II water-soluble crayons on an Icarus Art drawing board, a portable board that has warm and cool areas; the board is placed under the paper, and the wax reacts to the heated part of the surface