XXXXX DRUDGE REPORT XXXXX THU JULY 29, 2004 20:25:25 ET XXXXX KERRY ON ORANGE ALERT: SKIN TRANSITION ON EVE OF DEBATE Is it the late September Wisconsin sun that has turned Dem presidential hopeful John Kerry's face to rich tan-colored hues? Or has the senator been campaigning in the rust-belt? Kerry advisers defend the sudden deep tan transition, noting how it simply was from a game of flag football last Friday in Bedford, Mass. But the College Democrats who met Kerry were surprised by his rich tan glow -- before the game even began, the HARVARD CRIMSON reports.