Added some dialogs for transitions

resources/shaders/darklands_flash_web.fragment

@@ -1,7 +1,8 @@
 precision mediump float;
 uniform float uAlpha;
+uniform vec3 uFlashColor;
 
 void main()
 {
-	gl_FragColor = vec4(1.0, 1.0, 1.0, uAlpha);
+	gl_FragColor = vec4(uFlashColor, uAlpha);
 }