As smangerer said, there's a nice thread about HID, the assembly is from the 2010 european c-max. Nothing else is on the market yet, as far as I can tell.
The list of bulb types is in the owners manual, there's a number of variations. Once you find the bulb type, then most of the usual LED suppliers will be able to provide a matching fixture.
A couple notes: most LED replacement bulbs have a different illumination pattern than the incandescent they replace. Since they are illuminating a reflector assembly, the resulting light pattern on the road is changed. Automotive lighting experts say that the results are both illegal and unsafe. There's lots of subtle ways that this doesn't work right, so even if the replacement seems bright enough, it might not be bright enough to the side, or the difference in brightness between brake and tail isn't big enough to be noticeable, etc. That said, I've done a few replacements on my motorcycles and the results seem ok, so go ahead and experiment if you want.
Second, if you replace the turn signals with LEDs, you'll get a hyperflash if you don't install a load resistor. More experimentation is needed here.