On TreadleOn (a group of mad sewing-machine-users not much given to electricity) there is a conversation about a Block Exchange for Machines-of-Colour, which is to say, any colour as long as it's not Black
Now, on principle and for perfectly reasonable practical reasons, I don't do Block Exchanges
But then, this turned up yesterday. It's pretty much immaculate, hand-cranked (People Power!) and its Not Black..