Bea is wearing a green stripey sack dress suit today. When I went to change her nappy Sam came over to help. As I was putting her into a clean turquoise nappy he berated me, tugged on my arm and insisted I put a forest green one on her instead. Then, he raced off and reappeared clutching something. He’d rummaged around in her clothes drawer and pulled out a little green cloth cap to match her suit. “Hat! Hat!” he implored until I placed it on her head.