The color or behavior of the RGB logo on your mouse can be set separately for each profile. To modify its setting, just click the logo on the mouse image, or the RGB logo label.

The RGB logo has three basic settings, Off, Fixed Color, and Rotation Color.

Rotation Color is the default setting, and will allow the RGB to smoothly rotate through its full range of RGB colors.

With Fixed Color selected click the colored square that appears next to it, then use the color picker to set a specific color for this profile.