Make with the LED lights from the official source right this minute when you take a peek at the new GeForce GTX SLI Bridges. ... and you'll be able to enact LED Visualizer control as a bit of a bonus.

To control the logo lighting, referred to by Nvidia as the 'LED Visualizer', you will need version 1.7 or higher of the GeForce Experience software. Related Reading.

Another recommended method was to try the Nvidia LED visualizer, except that is apparently no longer included in their drivers and several accounts suggest that it's not supported for the RTX 20 ...

Than perhaps you'll be interested to know that NVIDIA, for the first time ever, has begun selling GeForce GTX SLI LED bridges in 2-Way, 2-Way Spaced, and 3-Way Spaced configurations.

Note that Nvidia has gotten wise to this and no longer provides LED Visualizer as an executable. Now it appears to just be a plugin for GFE. So I'd suggest grabbing that executable while you can.