BastyPutt
Yes, your Polish is a cockerel...
Just a chicken or egg question here.
Black to black produces black. In order to hatch blue, you need a blue and a black.
Edit: I'm aware other combinations of BBS can make blue, but it wouldn't be as dramatic or possibly poetic if I included that... which am unfortunately doing now.
So if you can only get blue from black, but can't produce a blue from black to black - how them did the first blue come about?!
Black to black produces black. In order to hatch blue, you need a blue and a black.
Edit: I'm aware other combinations of BBS can make blue, but it wouldn't be as dramatic or possibly poetic if I included that... which am unfortunately doing now.
So if you can only get blue from black, but can't produce a blue from black to black - how them did the first blue come about?!