"You most certainly can!" She handed Opal two without any indication she was being put out. The Doctor was very rarely 'put out' for anything and when it came to children she had infinite amount of patience. Well, this version of herself. There were a few more curmudgeonie versions of herself before this one.
"You must be right about the colour thing. Suppose it makes sense in a marketing sort of way." She didn't really spend time on marketing very much considering.
"Opal is a smart one." She looked at Ronan and winked.