This subject interests me. It seems like hanky use is rare in the UK these days, and when I do see a handkerchief it's usually a plain or bordered one in blue or white.
However... before Christmas, I noticed that the amounts of hankies on display in my local department stores increased, and there were more coloured and patterned hankies.
M&S even had little displays of Christmas hankies by the tills; I think they had a Homer Simpson design on them.
It makes me wonder... who is buying these hankies?

Do they sell well? The store obviously thinks people still buy novelty hankies as Christmas gifts, so why have I never seen anyone blowing his nose on Homer Simpson?
While browsing for hankies on eBay recently, I even found that they made boxes of Doctor Who hankies with little pictures of Daleks and David Tennant on them.
Who thought that was a killer merchandising opportunity??