We have collection trophy thingummies, so why not have some for those who've collected all of one species (hatch colours and dye colours seperate of course).
Was also thinking of a 'Lucky Hatcher' award, say- if someone hatches an albino and a blonde in the same day; or two albinos over a certain number of months. Or even an award just for hatching a coloured CS, or albino non-CS.
It would totally add to the excitement you get when you hatch something like that. :'D