Denied search text in the Auction House

Apparently, I can't search for "Prismatic" in the Auction House. It says "Your search text is too short."
Also Boswick.

While trying to search ANY specific color scheme you get that.
Same for volcanic, drab, etc. It seems to be deliberate and I have no idea why.

Obviously the SK staff wanted to silently troll the players.

That might have explained it, although the Wiki has "Prismatic" for a possible color for an accessory item.
Also, when I tried to search for "scale" in the Auction House, it brings back "An unexpected error occurred on the server."

Yeah, can someone fix this? I'd like to be able to search for "Toasty" items and there is no way to sort by color currently.

I can't look for "Heavy" myself, as I discovered while trying to be lazy when looking up "Heavy Hatchet".
I think it's denied because there is no equipment in the game with "Prismatic". The correct term you would be looking for would be Prismatech.