Whooboy, if you thought the fanboy bigots frothed over Jodie Whittaker...

[classicdrogn]

Well, the Doctor isn't human after all, or only half. It's entirely possible that along with being able to see time a Gallifreyan's eyes pick up enough other colours beyond what we call visible light that rainbow tie-dye is a staid and subtle choice by comparison.

Or The Doctor could just have the sensibilities of a magpie, yes. There's certain;y a big enough collection of odd and shiny or blinky things littered about the TARDIS.