Sorry , I don't want to seem negative. Let me follow up with some suggestions. You want to be able to see the screen, so you either have to stop down the ambient light (i.e. sun) or at least suns rays that hit the unit or your eyes. You can also step up the brightness in the unit so that it shows in the light.

One option is to look for a replacement for the facia , or even let the display out bare.