How many watercolour sets does one person need?  Maybe not this many if I am honest, but this was an interesting little task I set myself. It all started when I began to think about getting or making a new travel set of watercolours for myself.  I wondered whether to buy a ready made set or make a new set with a small tin and some gum trays.  Any excuse to buy some new tubes of paint, right?  When I started to look at the price of the paints I was coveting – wrong!  I have so many watercolour sets as well as a good selection of tubes, I decided to get them out and see what I had and what colours were among the many many sets past and present. My small collection consists of a vintage M. Grumbacher set from an estate sale which has great colours and pigments even now it has been around for a few decades. Then there is my homemade travel set in an Altoids tin and the paints …