I was saying that as a developer that has experience doing design. For example, a lot of people in fashion and design are able to tell what colours go together

I was saying that as a developer that has experience doing design. For example, a lot of people in fashion and design are able to tell what colours go together without analysing tables or systems of complementary colours. I'm really not making this up - most great creative people understood a lot of this instinctively (and a lot of it is a lot harder to systematise than colour theories, for example.)