Has anyone out there heard of or seen color correction filters or gels for DSLR's that attach to the on board flash? I'm looking for something that is made to attach to the pop up flash on the camera. Not simply taping a piece of gel to the flash.
Opteka makes (or distributes, at least) a hot-shoe mounted diffuser for the on-board flash that comes with warming and cooling diffusers in addition to the basic white (Amazon link).
There are also adhesive filters that stick right to the flashhead (Adorama link).