Yes, this irritates me endlessly...the lights are not on full blast in the retractable roof stadiums because it's still slightly light outside the stadium and it's dark. In real life, Arizona is considered to be probably the best background for batters, and it's so dark. I really really really hope the roofs are closed or the lights just go on full blast from the first pitch like they should be. And it is dark some places when the game starts, it's not always dusk, but that's another debate.