From the title... We all know that for sure! These PL9823s are almost identical to the WS2812, but with their color addressing of RGB instead of the GRB. And they are also available in a normal 4-pin LED form:

Soldering this thing up is not fun! The LED kept falling off, and I need many heatshrinks just for 16-LED string! So what I did was, I followed BigClive's solution: attaching these LEDs to a PCB header, and manually solder the terminals up:

I have a mini test program that lights up these LEDs at green to show that the LEDs are correctly connected. If they don't, one or few of them will be defaulted at blue at start.

Connecting the LED in the wrong direction permanently breaks it. And yeah, clumsy me, I had one broke because of that!

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I had attempted to purchase a string of PL9823s from Taobao, but the store wasn't active anymore. If you can get hold of the premade string, get them so that you can spend more time decorating or improvising the code inside.