WS2812B LED strip and ESP8266 shows wrong colors

v1(a)
0.030798
0.030268
0.030341
0.03037
0.030436
0.030451
0.030515
0.030617
0.03060900000
0.030679
0.03064899999
0.030679
0.03073700000
0.030856
0.030821
0.030756
0.030841
0.030878
0.03080600000
0.03079500000
0.03083700000
0.030755
0.030751
0.030744
0.03070499999
0.030687

v2(a)
0.023461
0.02335299999
0.02293
0.02335500000
0.02342099999
0.02307199999
0.023368
0.02320199999
0.02309100000
0.02331900000
0.02320100000
0.02319399999
0.02319899999
0.02302300000
0.02329700000
0.023054
0.022922
0.023505
0.02313600000
0.02292699999
0.023507
0.02306500000
0.02308200000
0.02353299999

v2(b)
0.03001599999
0.030012
0.03011499999
0.03015499999
0.03018
0.03026499999
0.03029300000
0.03027200000
0.030347
0.03035300000
0.03045099999
0.030484
0.03047499999
0.03058799999
0.03059
0.03054
0.03057
0.030644
0.03053399999
0.03054
0.030553
0.030486

v2(c)
0.02292799999
0.02256799999
0.02212799999
0.02253500000
0.02267299999
0.02225899999
0.02259800000
0.02252500000
0.02243099999
0.02248499999
0.02235399999
0.02252299999
0.02236899999
0.02222599999
0.02252699999
0.02229300000
0.02217800000
0.02258200000

v2 variants needed some remediation on var t0, along with parens

// V2b - flash an 8 LED neopixel array in a rainbow pattern
var neo = require("neopixel");
var led_count = 8;
var neoPin = NodeMCU.D4;
var rgb = new Uint8ClampedArray(led_count * 3);
var len = rgb.length;
var m = 127;
var r = 0.1324*m;
var g = 0.1654*m;
var b = 0.1*m;
var pos = 0;
var t0;
function getPattern() {
  pos++;
  for (var i=0; i<len;) {
    rgb[i++] = m + Math.sin((i+pos)*r);
    rgb[i++] = m + Math.sin((i+pos)*g);
    rgb[i++] = m + Math.sin((i+pos)*b);
  }
  console.log(getTime() - t0);
  return rgb;
}
function bow() {
  t0 = getTime();
  neo.write(neoPin, getPattern());
}
function onInit() {
  setInterval(bow,200); // may need to change to allow console to write
}
setTimeout(onInit, 1000);