I'm developing Windows Phone app in Visual Studio 2013.
By default the phone designer's background is black. It is very hard to design on it if all of my resources (images, font colors, backgrounds) are dark.
Is there any way to change that background to some light color?
In the Device Window (Design -> Device Window menu), you can change the theme from dark to light. This will affect the designer only and will not change your XAML. You can also change the designer accent color and some other properties too.