Almost finished recangle tool

There's a Math.round bug, sometimes the opacity is off.

js/_newPixel.js

@@ -66,6 +66,7 @@ function newPixel (width, height, palette) {
 		
 		//set current drawing color as foreground color
 		currentLayer.context.fillStyle = '#'+defaultForegroundColor;
+		currentGlobalColor = '#' + defaultForegroundColor;
 		selectedPalette = 'none';
 	}