Best comment - “where do I get pens these colors?”
I’ve never seen flesh colored ballpoints, nor white ones, nor all the shades he seems to create ... especially for the black and white drawings.
But it’s all in our perception. We live in a world of pixels. This guy may have taken pointillism to the next level, or he may be simulating it with groups of short fine lines of many colors; we’d see the “blend” at normal viewing distances.
Drew, try these: http://www.amazon.com/Fiskars-12-27457097-Gel-48-Piece-Value/dp/B000S161FO/ref=pd_sbs_op_16