RGB LEDs contain a Red, Green and Blue LED. You can mix any color by using the correct scale of the 3 basic colors.
If you grow brightness and keep scale at the same time, you can show the same color even brighter.
The brightness of basic colors can be set from 0 to 255. Brightness in Ozeki can be adjusted in absolute numbers or as a percentage.
An RGB LED is a perfect tool to show desired colors.
More information