I've had hippi's of some sort for over 10 years, started with some random hybrids dug from my neighbours garden and some bought Papilios, been gradually collecting mainly species since. Yes I hybridise, or at least self pollinate . Have gradually added some hybrids into the collection, but only pinks, pastels and greens... Not a red fan, don't know why. Altho I have plenty of Sprekelia scattered around the garden. Do you have any spare seeds right now, I have a few pale mixes, will be planting out in the next day or two.
Cheers, K