For the really dedicated gamers amongst us who believe that the Wii is severaly underpowered and wish to overclock it. They do need a sort of system to warn them before melt-down occurs. The extreme-mods folks have been kind enough to design something fashionably funky which serves the purpose.

With a built in Digital LED thermometer, the HOT ROCK CASE is able to alert the user by changing the LED color when the Wii console reaches certain temperatures. Color changes take place in 5 degree increments. For example, if your Wii console's temperature reaches over 55 degree Celsius, the LED will display RED and start flashing. This will alert the user to turn off the console and check for problems.

Hot Rock case (color changing chart)

Temperature (Celsius) / Chameleon LED color
- Below 29 c : Light blue
- 30-35 c : Blue
- 36-40 c : Green
- 41-45c : Yellow
- 46-50 c : Orange
- 51-54 c : Red
- Over 55 c : Red light flashing

Source