REDRAGON - SURARA K582 RGB Full-size Wired Gaming Outemu Red Switch Keyboard with RGB Back Lighting - Black

Yes, use "Fn+right arrow" to cycle through the colors. Various other Fn combinations are available for mode and other customization. See the manual, which can also be downloaded from the Redragon website.

The software install is not required for RGB lighting adjustment and effects changes. See the manual for the various function key (Fn) combinations to select between 18 different effects modes, plus speed, direction, color, brightness, and default settings. The software is required for Macro recording, however.

It is mechanical with blue switches

Yes you can

no