Ultra Bright 4 Watt RGBW NeoPixel LED - Natural White - ~4000K | The Pi Hut
12V 24V DC 5050 RGB 60LEDs+ 2700K / 6500K /4000K IP20 IP65 IP67 Tube Flexible RGBW Rgbww 4 in 1 LED Strip Light - China RGBW LED Strip, LED 5050 RGBW | Made-in-China.com
Multi Color RGBW LED Strip Lights - 84LEDs/m 24V LED Strip - 3000K/4000K/6000K White [FSLRGBW-4T1-5050X420] - $48.98 :
RGBW LED strip lights - integrate white and multi colors on one strip
Amazon.com: BTF-LIGHTING FCOB COB RGBW 4000K Flexible High Density Uniform Light LED Strip 816LED/m 9.8FT DC12V 12mm Width Color Changing LED Ribbon for Bedroom Indoor Decoration (No Power Supply or Controller) :