As I was working on concept for the lost city, I came up with the idea instead of the statue(s) being an enemy maybe being the hero of the game instead. So the enemy would be the jungle and its habitants itself overtaking the lost city and its up to the statue above to save it from being overrun. So obviously plants on there own isn't enough so I thought about large insects also being enemies. For the colour scheme the statue and city would still have the blue but the plants and insects would have orange instead. The orange would let the gamer know weak points on the insects and the dangerous points on the plants.
also been looking at Mayans and their language and culture, the words next to the statue actually say something and are there to look pretty. :)