Such an interesting series... it works surprisingly well. Its a good investigation. I like the way you stick at it and guess you aren't showing the failures (which would also interest me, although I could do my own experiments!) The striking thing here is the darkness of the rind.
@yrhenwr That's me trying different editing with LR. Playing with editing with the colour sliders. I'm not showing the millions of failures. Not great yet at always knowing before hand which colours won't work well together in b and w.
@newbank I've been playing with colour sliders doing b/w conversions in PS. I think I can now work out what the red and yellows will do but less progress with green, blue, cyan and magenta. You don't need to show millions of failures,, just a few of them would teach me something if you provided some accompanying notes! Obviously I will understand if you choose not to do that, so I hope I haven't put you under any pressure!