The view of the city turns into a play of simple square shaped areas and shades of colour casually laid upon each other. From this point it was just a small step to the water colours of pure coloured squares which were created on his return and in memory of Kairuan. In the evening Klee noted in his diary: „Colour has caught me. I do not need to search for it. It has me for ever, I know it. That is the happy meaning of this moment: I and colour are united. I am a painter. “