The pinkish color of most of the as yet unprojected states indicates that they believe those states are leaning red, voting to support #Trump. Interestingly, the undecided district in #NE is a very light blue, leaning to support #Biden, while the undecided district in #ME is pinkish.
#AK is still pure white, as little polling or exit polling occurs there.
Philadelphia stopped counting mail-in ballots for the night, so the pinkish color in #PA could turn out to be wrong. Also, Detroit had very high early voting and mail-in turnout, so #MI's pinkish color is also potentially misleading.
Again, these are projections by news organizations. We could awaken tomorrow and find that some states' true votes were different than most of the projections.