This application allows the colour and brightness of a CUE supported Corsair keyboard to be set using simple command-line arguments.
Please note that the only colour mode supported currently is the entire keyboard being the same colour and brightness. Unfortunately the CUE-SDK does not support fetching or modifying the current configuration, so it can only be overridden.
CueBright.exe [colour] [brightness]
The colour should be in the form of a hex code (#xxxxxx) and the brightness between 0.0 and 1.0 inclusive.
Downloads can be found here.