I've recently brought a grey top hat from a shop, and I am now looking to change it's colour, possibly using some stencils to add a bit of flair to it, but first I want to see how the hat looks in plain black.

The hat itself is made out of grey wool, (or at least, that's what the 100% wool sticker on the underside tells me) but thehat has what I presume is a wooden top so I can't use any dye that would require it to go in a washing machine or mircowave.

So I was curious as to if there are any suggestions on what sort of dye I should use for this hat?

--- Luke