https://www.sparkfun.com/components/leds-and-illumination/5mm.html
5mm - LEDs and Illumination - Components - SparkFun Electronics
SparkFun Electronics is an online retail store that sells the bits and pieces to make your electronics projects possible.
5mm ledsilluminationcomponentssparkfunelectronics
https://www.ledsupply.com/color-5mm-leds
Color - 5mm LEDs
5mm ledscolor