Ocean Material Making

[Stormheart100]

I am new to map making and i want to change the color of my water to look like lava, But i have looked every where and no one will tell me how to do this Can someone tell me how? Please and Thank you 

[Ingredient]

Here's a tutorial by Ringo: http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=8323.0