https://yswallow.github.io/javascript/simple/webhid/NeoPixel-color.html
255
にしてください。例
11,10,9,8,7,6,5,4,3,2,1,0
255,99,255,103,255,107,255,111,255,115,255,255
23,22,21,20,19,18,17,16,15,14,13,12
35,34,33,32,31,30,29,28,27,26,25,24
255,98,255,102,255,106,255,110,255,114,255,255
47,46,45,44,43,42,41,40,39,38,37,36
59,58,57,56,55,54,53,52,51,50,49,48
255,97,255,101,255,105,255,109,255,113,255,255
71,70,69,68,67,66,65,64,63,62,61,60
83,82,81,80,79,78,77,76,75,74,73,72
255,96,255,100,255,104,255,108,255,112,255,255
95,94,93,92,91,90,89,88,87,86,85,84