Significance of white in a tartan

[Tomo]

white in tartan signifies it was worn at the Battle of Culloden.

Sounds like the usual romantic, retrospective nonsense. A bit like highlanders ditching their usual red tartans for green to hunting... If only they had known deer are more sensitive to blue and green wavelengths, but struggle to differentiate between red and orange.

The problem is these tropes end up entrenched in the popular imagination. I work in e-commerce and my company are doing a lot of work with AI at the moment - so to test some of the output from a popular generative AI solution I put in some prompts to generate an article on kilts an highlandware - of course what I got was the usual guff about every clan having it's own tartan, wearing a kilt was to show loyalty to one's clan, not wearing underwear and some stuff about the "Diskilting Act"...