Dwain, would 'soot' & 'sulphur' colour be an appropriate face paint for your self and Brian?
If so James and I can eagerly help you with this at the Three Greyhounds! With our filthy chimney and the bag of coal James found hiding in the trailer the other day it should come out just right, half of it was slack and the rest beautifully marbled with a bright yellow line!
We can probably make you smell authentic too, bit like a burger van, when J. has put all the food in the smokebox!!
Hope your praying for good weather?
Mark.