SYNAPSE 2.0 SOFTWARE
Since the BlackWidow Chroma doesn't come with a software CD in the package you will need to download the latest Synapse 2.0 version from the official Razer support page (available for Windows and Mac).
The Synapse 2.0 software needs to download extra files once installed so that may take some time depending on your internet connection.
Through the Synapse 2.0 software you can remap all of the keys, record macros and customize the illumination effect and color for the keys.
Here you can see some of the illumination colors available.
The Synapse 2.0 software however also allows you to control the key illumination and tie it onto specific games and genres.
Here you can see one of the many illumination results you can have (the sky is the limit really).
You can also disable certain keys while Gaming mode is on although it's the stats (records keypresses) and heat map pages that steal the show (however this feature only works only with compatible games it detects on launch).