Up to two custom colors can be added.
Razer cynosa v2 change color. Select any of the image buttons to change the main image above. Select the razer peripheral you want to change the color or effect of. I do have one issue though.
Press + < c> keys to cycle through the available backlight colors. Select your razer keyboard from the device list. I usually connect the keyboard to my xbox and the settings i've saved on my computer is not being stored.
Download openrgb ( thanks to adam honse for this much needed software). White, red, green and blue are active by default; The razer blackwidow chroma includes separately programmable backlit secrets with 16.8 million color choices, all easily established via razer synapse.
Just bought cynosa and i really like it.