I tried an idea that seems to work pretty good. Take a colorable roof tile, pick any color or combination/pattern of colors, place a layer of them just under the surface of your body of water or pool. The closer to the water surface, the stronger the color will show through, with different effects according to what water you pick. Now you can make virtually any color water, and it looks good when the game is unpaused and the water surface is animated. Try a red or orange for a lava effect! Lighting can have some cool effects on the tiles too! Hope you enjoy this tip!
Example pics of what I mean here: https://imgur.com/a/gELqh
Example pics of what I mean here: https://imgur.com/a/gELqh
