Adjust the sliders to dim a certain color, and hide shading.
This is just an LED lamp i made cuz i was bored. Play with it if you want. Fun fact: Did you know the red and green LED was easy to invent, but the blue one was almost impossible to invent. That's why back then we didn't have modern screens. for digital radio monitors, we could only use the colors red, yellow, and green. Try it! Single out the blue by setting its dimness to 100, and adjust the other colors, and you'll see for yourself, it's crazy!