use pseudo-random number in scattergl large color arrays test
use pseudo-random number in scattergl large color arrays test

asolagmbh/plotly.js,plotly/plotly.js,aburato/plotly.js,etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,aburato/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,etpinard/plotly.js