Kilt sun bleaching.

[OKSooner]

There might be another way to make the tartan look weathered or older? Sun bleaching doesn't sound to me like it would work well. I've never seen it done before.

Plus, the sun doesn't shine enough in Scotland to bleach a kilt, I would guess.

[Luke MacGillie]

Period dyes do oxidize. Not so sure about modern dyes that are purposely designed to be colorfast. I remember a big tadoo over a bunch of confederate uniforms from a progressive/hardcore sutler that oxidized over a weekend. Pretty sure it was logwood dye that went black to purple between morning and evening colors ceremonies.

[Jock Scot]

There might be another way to make the tartan look weathered or older? Sun bleaching doesn't sound to me like it would work well. I've never seen it done before.

Plus, the sun doesn't shine enough in Scotland to bleach a kilt, I would guess.

Well yes and no. Whilst it is true we in Scotland do not have the amounts of sun that other places in the world have, nor the heat, but when we do have the sun,it is actually very strong as we have very little air pollution. A fact often forgotten even by the locals to their considerable discomfort.