diff --git a/lib/system/supports-colors.js b/lib/system/supports-colors.js
index 3e008aa..aa2f841 100644
--- a/lib/system/supports-colors.js
+++ b/lib/system/supports-colors.js
@@ -1,61 +1,73 @@
-/*
-The MIT License (MIT)
+'use strict';
+var hasFlag = require('has-flag');
 
-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+var support = function (level) {
+	if (level === 0) {
+		return false;
+	}
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+	return {
+		level: level,
+		hasBasic: true,
+		has256: level >= 2,
+		has16m: level >= 3
+	};
+};
 
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
+var supportLevel = (function () {
+	if (hasFlag('no-color') ||
+		hasFlag('no-colors') ||
+		hasFlag('color=false')) {
+		return 0;
+	}
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
+	if (hasFlag('color=16m') ||
+		hasFlag('color=full') ||
+		hasFlag('color=truecolor')) {
+		return 3;
+	}
 
-*/
+	if (hasFlag('color=256')) {
+		return 2;
+	}
 
-var argv = process.argv;
+	if (hasFlag('color') ||
+		hasFlag('colors') ||
+		hasFlag('color=true') ||
+		hasFlag('color=always')) {
+		return 1;
+	}
 
-module.exports = (function () {
-  if (argv.indexOf('--no-color') !== -1 ||
-    argv.indexOf('--color=false') !== -1) {
-    return false;
-  }
+	if (process.stdout && !process.stdout.isTTY) {
+		return 0;
+	}
 
-  if (argv.indexOf('--color') !== -1 ||
-    argv.indexOf('--color=true') !== -1 ||
-    argv.indexOf('--color=always') !== -1) {
-    return true;
-  }
+	if (process.platform === 'win32') {
+		return 1;
+	}
 
-  if (process.stdout && !process.stdout.isTTY) {
-    return false;
-  }
+	if ('COLORTERM' in process.env) {
+		return 1;
+	}
 
-  if (process.platform === 'win32') {
-    return true;
-  }
+	if (process.env.TERM === 'dumb') {
+		return 0;
+	}
 
-  if ('COLORTERM' in process.env) {
-    return true;
-  }
+	if (/^xterm-256(?:color)?/.test(process.env.TERM)) {
+		return 2;
+	}
 
-  if (process.env.TERM === 'dumb') {
-    return false;
-  }
+	if (/^screen|^xterm|^vt100|color|ansi|cygwin|linux/i.test(process.env.TERM)) {
+		return 1;
+	}
 
-  if (/^screen|^xterm|^vt100|color|ansi|cygwin|linux/i.test(process.env.TERM)) {
-    return true;
-  }
+	return 0;
+})();
+
+if (supportLevel === 0 && 'FORCE_COLOR' in process.env) {
+	supportLevel = 1;
+}
+
+module.exports = process && support(supportLevel);
 
-  return false;
-})();
\ No newline at end of file