Why not choose your own?

Brew a cup of coffee or tea - Take care though, boiling water is not for splashing around. 

When the cup is cold, drain out most of the water, leaving the strongest (and murkiest) colour at the bottom. 

Using a brush, gently wet your map with a small amount of the murky water 

- Make sure it's very light strokes -  you don't want to ruin your hard work! 

Let your map dry and look upon your incredible new world! 

"May your maps never lead you astray, fellow Cartographer." 

(Levi Larsen, Company of Cartographers).