I love red and yellow together. And I love solid blocks of gutsy colour. This arrow, on the smooth grey concrete floor of the parking lot at my local shopping centre, is positively luscious! The dirty grey stops it from having any pretensions of prettiness—another point in its favour—and highlights the unadulterated mass of primary colour. I’ll need to keep my eye on this yellow arrow: for now, the newly applied paint is vibrant and clean, but in a few months it will have been run over by thousands of dirty car tyres and walked on by thousands of pedestrians, so it could get even more interesting.