Official rules of the Scottish Cyclist.
#5. Team kit is generally frowned upon, especially if matching shorts and jersey are worn. Matching cap, gloves, socks, etc all at once is strictly oot ay order! If the Scottish Cyclist, is in a team or club, then wearing the kit is OK, but lots of matching items should not be worn at once, and the kit certainly shouldn’t be white, for obvious reasons. In some circumstances retro team kit may be accepted, e.g. Robert Millar’s Peugeot jersey, but it should never be worn as a matching set.
Official rules: full list.