Transparent Background

I have set all layers to transparent and I'm using XDK to apply a background image to index.html

The background image is showing fine but my project still has a black background.

Not sure where this background colour is set.

Is it possible to have a true transparent game running on a background image?

Ok it seems that the background colour is set on the C2 canvas as using #c2canvas{opacity:0.5;} within the index.html makes everything at 50% opacity.

Hopefully, there is a way to just make the background colour invisible without affecting the other objects.