Just a brief bit from John Nathan-Turner, defending Colin Baker’s costume… by comparing it to a Hawaiian shirt…
“There were some complaints about the costume, and it’s nonsense. It was nonsense then and it’s nonsense now. Colin’s costume is fine for the Doctor, he’s not a human like one of us, he’s an alien, he’s a Time Lord from the planet Gallifrey and so he’s bound to have different customs and different outlooks, and so it seemed logical to make it a bad taste costume. Bad taste in our opinion but not in his.
“I always liked wearing Hawaiian shirts, and Hawaiian shirts are very colourful, and I always felt that people took you very well, that they assumed you were a warm, friendly, funny, likeable, approachable sort of person if you were wearing a Hawaiian shirt, because of the bright colours and the patterns and so forth. So when it came to designing a costumer for Colin Baker, I thought why not make it a Hawaiian shirt, but make it Edwardian, like the other Doctors wore, like Tom Baker or Jon Pertwee would have worn, sort of Tom Baker meets the Hawaiian shirt. So we decided on a multi-coloured motif.
“It stretched to the opening title sequence as well, we took the Peter Davison title sequence and added streams of multi-colours, just like on my favourite Hawaiian shirts. I thought it looked terribly nice”.