I'm more of a lurker then poster but yes this pixels can be found on aliexpress like fairy lights i run 200 of them from 2A 5V phone charger and esp32+wled the last 20 get dimer on white but for effects run perfect they sell the to run from 3 AA battery's
This ones are fix address pixel explained here there is also more info in the wled github https://github.com/Aircoookie/WLED/issues/1312
View: https://www.youtube.com/watch?v=ge8Swdd9Srw