Yes Jaben Hong Kong is selling the case in 4 coulours (red,blue,black,pink if not mistaken).I got my DX50 there together with the case at the same time :)
Last night I updated the firmware to 1.2.5 and it is awesome! Don't really notice the difference with 1.2.2 in SQ wise as I'm a newbie, but what do I notice straight away is the memory card scanning is in lightning speed! It was turned off after factory reset, plugged in the SD Card, turned on, and seems like no scanning at all! I went to directory and yes it is updated! Tried to play a single file and it did media scanning but only last like 3-4 seconds and good to go.
Touch screen sensitivity also ok (no problem with scrolling) and load very fast between screen to screen.