Dan pointed out how odd it is that apples can look so different. Same basic type of fruit, roughly the same size, but a traffic-light set of colours:
Meanwhile I'm trying not to gloat over our wonderful supply of oranges, just outside the kitchen window. The lemons aren't doing so well this year; perhaps it's a bad year for lemons in general, as the ones in the shops aren't great either. Usually by December they're excellent.
However I'm very pleased with our orange tree: