So it sounds like you are just wanting a deleware with buff barring instead of black barring, right? It wouldnt be that hard I dont think. I would say use a good deleware male and cross to New Hampshire hens (closer than buff orp but more red). Take a male from that and breed back to new hamps, and by then some birds should start coming out like you want. Also look up the topic of red barring, same thing applies about getting the red barring but the dels are barred columbian. I dunno, I hope Krys comments.