I’ve finally gotten round to updating the previous quick and dirty example of how you could use the Kuler API to very quickly let your users skin your application, inconjunction with some greyscale tonal transitions to give it an Aqua look.
The changes Adobe made which broke the original version were to force the use of a Developer key, much like google maps, which must be included in all service requests. I’m not going to bother removing my key from the source, it’d be easy for anyone to decompile the swf, or use fiddler to check the service request. If you want to hide your key you’ll have to use a separate php script to proxy the service request.
Along with this they also require the use of the Kuler logo in your application.
Find out all the details for yourself and apply for a key here