var Color = Class.create({

	initialize: function() {

		this.color = [0, 0, 0];

		

		// Initialize with hex string

		if(arguments.length == 1) {

			var regex = /^#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i;

			var match = regex.exec(arguments[0]);

			if(match)

			{

				this.color[0] = parseInt(match[1], 16);

				this.color[1] = parseInt(match[2], 16);

				this.color[2] = parseInt(match[3], 16);

				

				// Make sure we have valid rgb

				this.check();

				return;

			}

			

			var regex = /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/i;

			var match = regex.exec(arguments[0]);

			if(match)

			{

				this.color[0] = parseInt(match[1], 10);

				this.color[1] = parseInt(match[2], 10);

				this.color[2] = parseInt(match[3], 10);

				

				// Make sure we have valid rgb

				this.check();

				return;

			}

		}

		

		// Initialize with rgb

		else if(arguments.length == 3) {

			

			if(arguments[0] >= 0 && arguments[0] <= 255 &&

			   arguments[1] >= 0 && arguments[1] <= 255 &&

			   arguments[2] >= 0 && arguments[2] <= 255)

			{

				this.color[0] = arguments[0];

				this.color[1] = arguments[1];

				this.color[2] = arguments[2];

				

				// Make sure we have valid rgb

				this.check();

				return;

			}

		}

	},

	

	darken: function(amount) {

		this.color[0] -= amount;

		this.color[1] -= amount;

		this.color[2] -= amount;

		this.check();

	},

	

	lighten: function(amount) {

		this.color[0] += amount;

		this.color[1] += amount;

		this.color[2] += amount;

		this.check();

	},

	

	check: function() {

		for(i = 0; i < 3; ++i)

		{

			if(this.color[i] < 0) {

				this.color[i] = 0; }

			else if(this.color[i] > 255) {

				this.color[i] = 255; }

		}

	},

	

	hex: function() {

		return '#' + this.color.invoke('toColorPart').join('');

	},

	

	rgb: function() {

		return this.color;

	}

});