You might try a thin layer of vermiculite over the seeds. That's what I'm going to do. I haven't tried Kew Blue, but the Chocolate Royale didn't seem to need any different treatment from the mixed seeds.
AND, for the record, the seeds I saved off my Chocolate Royale plants looked very like their parent plants. I got a couple of odd (and interesting) colored blooms, but in the main they still looked like Chocolate Royale.
