On days like this, when five or more new colours come out, it'd be nice to have.. a sort of archive, I guess. Hit a link on the main page, see the previous five colours in reverse chronological order.
Hmm... well, the RSS feed allows you to get ten pets, instead of the standard five. And the number of pets on the front page can be varied - I already have it set to six and didn't have any problems today.
I'll try to find another solution as well in the near future.
The old site had the calendar you could look at, but it was broken more often than not and always took a long time to load. Still, if we could get a working version of that I think it would be useful.