As per the title, I hope to change the background on MRIcron from black to white. I can't see a setting with which to do this.

(Note that I don't mean the 'background image' of the brain/template, but the black background upon which all other images are overlaid).

I'm using MRIcron to make slices, and have tried exporting images and changing the black background color to white, but this leaves a thick black outline around each image.