getNextColor(mod) {
		if (this.opts.colors && Array.isArray(this.opts.moduleColors)) {
			// Credits: "visionmedia/debug" https://github.com/visionmedia/debug/blob/master/src/common.js#L45
			let hash = 0;

			for (let i = 0; i < mod.length; i++) {
				hash = (hash << 5) - hash + mod.charCodeAt(i);
				hash |= 0; // Convert to 32bit integer
			}

			return this.opts.moduleColors[Math.abs(hash) % this.opts.moduleColors.length];
		}

		return "grey";
	}
Get a color for the module name.