I must admit I never read Judy's post fully or would not have repeated myself and the point would have been taken. Nonetheless, posting what appears to be a straightforward change of colour, of only a couple of shades, without a bit more detail about, what the customer wanted caused, some confusion in some peoples minds.
Incidentally Bob, I've been experimenting for many years, but I've been LUCKY. Not something I'd recommend to everyone. Nothing to do with " having balls "just an enquiring mind and insatiable curiousity.
I'm currently carrying out a number of trials involving leather.
robert m