Razer BlackWidow V3 Mini Hyperspeed - RGB lighting off without Synapse?

Hello, I plan to use the BlackWidow V3 Mini Hyperspeed keyboard with my 2011 iMac. Synapse flat out doesn't work at all on my Mac (never recognizes any of the devices) yet I just want to be able to turn off the RGB lighting to maximize battery life then just use it as a dumb non-gaming wireless keyboard. Is there a way of doing that without using Synapse? Thanks in advance...