How to use the red function from color

leaflet-measure.js

GitHub: PaoloSparacio/Mappa_DSG_318_20221013_GioiosaMarea

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Color.prototype.setChannel = function(space, index, val) {
   if (val === undefined) {
      // color.red()
      return this.values[space][index];
   }
   // color.red(100)
   this.values[space][index] = val;
   this.setValues(space, this.values[space]);
   return this;
}

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