One of our colleagues on Painters Online (web pages of The Artist and Leisure Painter magazines) painted a picture in a range of greens. In admiring her (Louise Naimian's) work, I remarked that the late F C Johnston, ex-editor of Leisure Painter and the author of a book on oil painting technique, recommended painting studies in Viridian (Green) and Alizarin Crimson, as a lesson in tone rather than pure colour.
Louise is one of those people who, faced with an idea, has to accept it as a challenge. You can see her watercolour using red and green on POL now (just type in her name to find her gallery). I also, unwisely, mentioned I'd painted a few studies in Viridian and Alizarin - without mentioning I did them 30 years ago, and Louise wanted to see them.
Well, they could be anywhere now - they're probably here in a file somewhere. Anyway - rather than disappoint or brand myself a liar, I thought I'd do a new one. It's only a very quick effort, in acrylic on Daler Rowney System 3 acrylic paper (which I don't like very much, in sharp distinction to nearly all other D-R products) and yes, I know the chimney pot is wonky: the point of doing this sort of thing is to explore tone, light and dark and the bits in between, and Viridian and Crimson produces a very strong range of colours.
Except ....... it ain't Viridian; I've run out. So it's Hookers Green, plus Alizarin Crimson; and being acrylic, it has to have a bit of white with it, which watercolour wouldn't need (but oil would, obviously). Always useful to have a go at this sort of thing, if you haven't already: I wouldn't argue the results are especially pretty, but that's not the point.