Yesterday I was experimenting with Daniel Smith watercolours. The aim was to get a really good deep black with just two colours.

The Perinone Orange with Prussian Blue is particularly magic. Two quite pale colours suddenly combine to a carbon black. It’s like watching a chemical process. Although it is, of course, a physical process. These two colours are complementary, and together they absorb all the visible spectrum. Impressive.
I did other experiments:
Then I had a lot of colours left in the mixing tray. I didn’t want to throw them away, they looked so lovely and jewel-like in the mixing tray. So I made some sci-fi landscapes.
The watercolour experiments were in a Khadi sketchbook. The Sci-fi landscapes in a Carnet de Voyages, by Arches.