Desert Island Escape Level 1

[Captain James]

I have successfully mapped Level 1 of Desert Island Escape, and I'd thought I share it with you all.
Blue/Light Blue:Water
Green:Grass
Grey:Mountain
Orange:Beach
Brownock/Watch Tower

Google Drawings was very helpful. Now, have a map.

 

[Red Cat]

This would be really helpful for people even if it is kind of cheating. What does the light blue and brown mean?