Logitech G PRO Setup Manual page 21

On the left, you can see the color picker In the main color section
the shade of the colour changes from left to right and the brightness
of the color changes from top to bottom of the rectangle
You can save a color by clicking the circle with the + sign in it below
the rectangle To assign a color to one of the LEDs, just select the color
and then click on the LED in the image on the right (the mouse icon will
change to a paint bucket to show you that you can "paint" that colour
on the LED)
Below that is a drop down menu containing the preset patterns
that the PRO Racing Wheel already ships with - just choose the one
that you prefer
To finish, rename the pattern by selecting the RPM LEDs text at
the top, typing your own name and then click Save at the bottom
21 ENGLISH