6 of Swords

Why are the trees and the land blue/grey?

Is this a mistake or is there a reason
why the people are moving to blue/grey land?

On the 'learntarot' site she described it nicely--it's 'the blues', depression, moving into the land of the blues. I also look at it as misty shorelines, as the central figures & the boat mean more than the actual direction or goal being worked towards. It's a process of the journey, not the final destination. So by focusing on the people in the boat, there lies the main meaning of the card.

a dark and indefinite shore

Abraham Lincoln was deeply mystical, and he sometimes told
of a recurring dream of his where he seemed to be on a river,
as he said, "in a singular and indescribable vessel,
but always the same~ moving with great rapidity
toward a dark and indefinite shore."

He believed it was a good omen.

Mary Todd Lincoln's interest in psychics would surely have
brought Tarot cards into their lives. They were very close.

Abraham Lincoln