Cant figure out how to change the colors on my keyboard.

Hello, I recently bought a Razer Black Widow keyboard, and I plugged it in, and by default it rotates through the colors of the rainbow at a regular paced rate. But I would like to change the colors since I hear these keyboards are very customizable. I even downloaded the Razer Synapse program, but it says my keyboard wont connect. Please help. Thank you :)