Circuit to control an RGB LED strip using potentiometer sliders to change colors - Electrical Engineering Stack Exchange
Make a RGB LED Colour Slider with Electric Paint – Bare Conductive
TORCHSTAR DC12V-24V 9A PWM RGB LED Dimmer Controller, 3 Channel Output for RGB Multi-Color LED Strip Lights & Single Color LED Strip Lights: Wall Dimmer Switches: Amazon.com: Tools & Home Improvement