Alright, so I just had a look at metal dyes available in Dvergeheim and then went to the OOC room on a test character to have a look at what those dyes actually look like... and from what I'm seeing, a lot of the metal dyes available for sale either aren't listed on dye dummies or they're listed under another name.
Also, why does the Dvergeheim vendor sell BRIGHT PINK? Come on.