There are screws in the bottom. Three I believe (one is under the QC OK sticker, the other two under the feet, I think). After that you can pry the case apart with a butterknife or with your hands. Once you've popped the lid, be very careful to not stress the PCB USB connector on the keyboard's mainboard (I broke mine off from opening it too many times). Unplug it carefully. I can post pictures of this process if you like.
Hey, DV, I'd like to see that if you could swing it - I kind of have a candy apple red theme going on on my desktop, and I'm considering popping the top and repainting it.
Sorry for the late reply. Here it is:
Step 1. Locate the one screw holding it together (under the white sticker)
Step 2. Remove screw with a screwdriver
Step 3. You should get something to pry with. I can open these using my fingers, but I do this sort of thing every day for a living. I have shown a butter knife, though a nylon stick (or spudger) will work too. Your mileage may vary
Step 4. Push the casing away from the clip using the butter knife. I have the knife inserted near the first of the four case clips (locations shown later). Specifically, you want to insert your object and pry the outer case away from the case bottom. You should not have to pry hard or very far (only a few mm or so). The case should "pop out" slightly meaning you won't have to hold it from popping back in. This makes it easy, because now you only have to focus on simply popping the clips in succession. Thanks CM!
(note, my veins are not sticking out through great effort or anything. They just do that normally.)
Step 5. Release the other three clips in the back. It's hard to see in my quick photo, but the middle tow are visible and there is one near my thumb.
Step 6. Start work on releasing the four front case clips
Step7. Front case clip location shown
Step 8. Teh top should be pretty well off now.
Step 9. Remove the top
Step10. If you are removing the keyboard out of the bottom case, you will have to remove the USB PCB connector. (Shown) It's sort-of hard to remove, and you'll have to be careful or you'll break it off like I did and have to solder it with wires. you can see some of these here.
(Hey kids! remember what this looks like so you'll know the circulatory system of the left hand for anatomy class!)