How do I remove NWjs window flickering?

Here's what I mean :

I am attempting to make a launcher for my game; and looking at this white-to-black-to real image every time you use a launcher would be hell-like. Please help me remove this.

Thanks in advance.

Trying to hide the window during load doesnt do much, since it flickers like that first and only then triggers "On start of layout".

:///