In reply to:
In other words, green is supposedly the display with the highest contrast. Whether or not it shows up well in direct sunlight is an issue for all the colors, but I'm not sure if what color you have determines how well it does in the sun.
Also, empeg is currently experimenting with anti-reflective coatings for the coloured plate to help with the glare, but it looks as if it will cost extra to get your existing plate replaced.
See this, but I think I recall seeing something newer somewhere.
Kureg