@pontiac428
I was being silly for the purposes of humour.
Gear marking compound hasn't been banned in the UK, but for some reason it's just not easily available over here.
There's a (fairly innacurate) caricature of old, traditional English companies being stick-in-the-mud and resistant to change, especially northern UK companies.
My joke was that one such company, like the one making the engineer's marking blue that I have, might lobby to stop foreign 'fancy' products that competed with their offerings.
I think the joke is probably easy to spot if one is a Brit (or possibly an Aussie or a Kiwi) but since the US generally has always had a strong cultural aversion to, or even horror of, the stifling of technical innovation, the joke may not work as well for you chaps.
Kinda regret making the joke now.
Anyway, I have a load of Dyekem marker pens heading my way in lots of colours, so, when I need to check the mating of parts of whatever surface colour, I'll hopefully be reasonably well equipped.