pTiming = opData.cmd_time / max;

        opHeight = Math.round(Math.max(1, opTiming * height));
        opLabel = opData.cmd_string;
        barLeft = CHART_PADDING_LEFT + b * barWidth;

        this.chartCtx_.fillStyle = this.getOpColor_(opLabel);

        this.chartCtx_.fillRect(barLeft + BAR_PADDING, AXIS_PADDING_TOP +
            height - opHeight, barWidth - 2 * BAR_PADDING, opHeight);
      }
    },

    getOpColor_(opName) {
      const characters = opName.split('');
      const hue = characters.red