Guild Colours

A guild has it's obvious nameplate sitting under a players name, but what other things make a guild stand out?

The heraldry, you can have your guild's emblem in your cloak (can it be anywhere other than that?) which could define your guild when you see their back to you... but what else?

Guild colours crossed my mind. Although colours don't necessarily mean you belong to a guild as much as the heraldry emblem and actual guild nameplate above you, but isn't it nice to see a group of cheerleaders all dressed in the same outfit doing the same together?

Can the same be done with a guild in WAR? Would a guild not take a member who isn't wearing the colours of the guild into ORvR to be a recognised guild member?

Which colours would be the ones that stood out on the server? Could Thwomp be bearing the colours of the leaders? If anything, I'd want the colours of Chaos Within to be White/Yellow like Thwomp's currently is.

The only problem with the cloak on Thwomp, is that some random player (who was extremely kind and I owe you for Thwomp's great uniform now) gave it to me, I have no idea where to get them from. Anyway, the cloak was pure white, not the 'dyed white' (or is it called chainmail?) that the vendors can do. The cloak is the standard white with the yellow (or gold) around the edge to go with the rest of his gear.

How difficult is it to find these white cloaks?