Chicky Dee, I would also assume that 'pure eggs' would mean that the eggs are from one breed only, as in, you're cooping your breeds separately. BTW, LOVE your Avatar. Reminds me of my 3 and 5 yr old grandsons who just left here after sleeping over (although they don't ever actually sleep, not sure why we're calling it a sleep over).
Here is a pic of the first chick out. She's a mix between a Mille Fleur Banty Cochin AND a Lemon Cuckoo Orpington. The hen is so much bigger than the roo, I wasn't completely sure he was fulfilling his obligation. MsLadyHawk talked me into incubating these ones.... She really IS quite the enabler!! But wow what cute and funny looking chicks these will be.