Many of you are probably familiar with the Handprint website. It has a little bit of everything you might want to know about watercolor. In fact, you can feel a bit overwhelmed by the mass of it, lol. But if you are looking for substitute colors, or wonder how to test a new paper – or just almost anything you will probably find information here.
The only downside is that it hasn’t been updated for quite a long time so some of the information – especially regarding brand pigments – is outdated. But there’s still some real gold here for those willing to do a little mining.