Is there away to create unbound maps in different colors. I am currently running a few sessions underwater and it takes a little while for the water map i created to load for my players.
In fact, you can use any image in the Image Explorer (previously called the Asset Panel) as the background for an unbounded map.
Find the image you want to use as the background tile in the Image Explorer, right click->New Unbounded Map. And there you go.
As a point of note, we're in the process of designing a new, more intuitive way to create new maps: