That's what I'm hoping to do - have them meet in the middle. Here is a list of the OP Frame seeds I'm using - F1's of both:
Double Blue Picotee X Mini Bar Rose F2, F3, F4,
Platycodon Blue X Fujishibori
Grey Fog
Rose Silk
Rose Silk X Fujishibori
Mini Bar Rose,
NOID Blues & Pinks
and
Rose Silk
Hanafubuki
Sunsmile Purple
Platycodoon Blue
Grandpa Ott
Cardinal Climber Yellow