I love my liquid watercolours. I began with a starter set of the colorex brand, but then I discovered ecoline, a lqiuid watercolour made by Royal Talens, a company in the Netherlands. Ecolines doesn't come in round bottles - they are square and resemble inkwells. I bought a bottle with ultramarine dark watercolour ink (it is not real ink but the name "ink" is used quite often).
Of course I had to try it out. I seldom buy something new and do not give it a try on the same day. In this painting i mixed the magenta from colorex with the ultramarine from Ecoline. I must say that mixing colours is not easy with those liquid watercolours - I don't always get the colour I want to have. But I give myself the permission to experiment!