What are these shoelaces called and where can I find them in a different colour

[RedNailsAndRedDress]

They are very thin and maybe waxed? I've been in all the shoe shops and shoe repairers nearby but they don't have any thin enough.

www.amazon.co.uk/gp/aw/d/B00J2T1XCO/ref=mp_s_a_1_1?ie=UTF8&qid=1481568863&sr=8-1&pi=SY200_QL40&keywords=brown+shoelaces&dpPl=1&dpID=41sFrwRD36L&ref=plSrch

Any use?

Loads on ebay too.

Thank you very much :)