Time is going so fast , from we have develop APA102,APA104 RGB led , it is about one years , Nowadays ,our company have develop single color bulid in IC 5050 LED CHIP , it is

APA102,APA104 White led ,  About the white color, it can be Warm white , Cool white , nature white , Pure white , it is just as same as RGB chanel, one led chip channel is

WWW. there are some datasheet about them

APA104 White LED datasheet

APA102 White LED datasheet

Nowadays we have use those led chip to make our addressable white led strip , and addressable RGB+W led strip , and it is very hot sales 

video of addressable white led strip  is on the following