Is it more expensive and harder to paint exterior of home when going from white to a darker color or darker color to a lighter color?
To go from a dark to light color, You definitely need to use Kilz or Bullseye primer to completely mask out the dark color so it doesn't bleed through the paint This way You won't need so many coats to cover it
darker to lighter takes more coats.
darker to lighter...HARDER!!!
More harder? Really? That can't be correct grammar, I'd flag you guys if I was a mean person.....