colr.org is down at the moment. One of the questions paintr asks is “What happens if a service you base your work on goes down?”. I didn’t expect to get such a quick answer. :-)
The colr website lists some alternatives to colr.org, I’ll have to recode paintr to be able to use one of them instead:
Or there’s an algorithmic palette generator:
But that goes against the folksonomy emphasis of paintr.