well i think i disagree with oopsmen. that's totally the wrong approach. hell that hasn't even worked in years! you see something like that now and all you get is the response or reply of 'FAAAAAKE' and the like...
when you think about the sunrise, you tend to have a warmer light than in the evening (after sunset i'm assuming) so you want to use light that's more yellow, orange, or red tinted, but NOT overdone... it's gotta be subtle.
Accept no substitutions.