Does any one know if i can change the green color in the 2d mode.i cannot see it in the day time.and one more question what about the gray box in the upper left .how to get ride of it .Thanks

Clock colors are in the navigatemap_800_480.txt in the ui_pioneer/800_480/ui directory. Look for this writing, it's at the top:

heres a link to all the colors. Just swap out the numbers and swap out Data zips: http://www.webmonkey.com/reference/Color_Charts

and what gray box?