Editor: Use sRGBEncoding as output encoding.

editor/js/Viewport.js

@@ -313,7 +313,7 @@ var Viewport = function ( editor ) {
 
 		renderer.autoClear = false;
 		renderer.autoUpdateScene = false;
-		renderer.outputEncoding = THREE.GammaEncoding;
+		renderer.outputEncoding = THREE.sRGBEncoding;
 		renderer.setPixelRatio( window.devicePixelRatio );
 		renderer.setSize( container.dom.offsetWidth, container.dom.offsetHeight );
 

editor/js/libs/app.js

@@ -21,7 +21,7 @@ var APP = {
 		this.load = function ( json ) {
 
 			renderer = new THREE.WebGLRenderer( { antialias: true } );
-			renderer.outputEncoding = THREE.GammaEncoding;
+			renderer.outputEncoding = THREE.sRGBEncoding;
 			renderer.setClearColor( 0x000000 );
 			renderer.setPixelRatio( window.devicePixelRatio );