Here's the list from Jack at Cavendish Perennials - so I have a selection of some of these - I'll post some pics tomorrow, and maybe we can narrow it down - that would be fabulous!
'Aquarius' - grey-green backe/tipped red
'Melanheuff' - deep brown-red - silver edge
'Greenstone' - green- maroon tips/dark winter??
'Violet' - deep violet purple - trace of green
'Inferno' -large, maroon-red - green deep in centre
No descriptions held for these: 'Henri Correvon' , 'Mystique' , 'Aphrodite', 'Bandero', 'Blaze', 'Maduro', 'Torrid Zone'
'Gold Bug' - self explanatory, but 'Xanthoheuff' is also yellow/gold.