Is There any way get night mode on the new OS Marshmellow?

[AC Question]

I work at night. I need my back screen to be black & my text to be white. The glare is dangerous. when driving. Negative colors. Reversing the colors on screen don't work as per it affects picture images. This would be a good app to create. Can anyone help ??

 

[Tim1954]

Custom launcher may be the way here. It's annoying that these days of super bright (battery hungry) screens, they don't come with dark themes!