Paints and pigments

I use principally watercolours tubes for melting effects and pigments diffusion. Nevertheless, in small pots are more practical. It'a question of personal choice.
watercolour paints and pigments
I don't use white. It's not for me waterlolour. I consider that white has to be obtained only with the paper by tranparence.
The coulours I prefer are : burnt sienna, yellow ochre, carmin or alizarin, "vert de vessie", ultramarine blue.
It's not really a conscious choice, but I notice that my brush goes more spontaneously to this pigments. I try to work with not to much colours.