LEDs illuminate the Passive Chroma LED Tube to give an even distribution of light, perfect for a multi-sensory room by stimulating the senses. You can control the colour of our Passive Chroma LED Tube using a wireless remote control, or with DMX for fine adjustment. LEDs illuminate the frosted tube to give an even distribution of light, perfect for a multi-sensory room by stimulating the senses. You can control the colour of our Chroma LED Tube using a wireless remote control, or with DMX for fine adjustment.