Walked over to Bishop's Park off Fulham Palace Road for a plein air session and discovered this beautiful pink tree adjacent to the old palace. I tried pre-mixing colour strings for the foliage. I've never done this before, but was quite pleased with the outcome. A colour string is a range of tones for a given object, so from light pink to rusty brown in this case. The alternative is what is known as free mixing, where you just mix colour notes as you go along. The advantage of a string, it seems to me, is that it results in a more harmonious spread of colour notes, which of course is how the tree actually appeared.