Water color based on block beneath it

Water shouldn't be getting color through the biome, instead make it so the color of the water will be changed based on what block is beneath it. This will create a better atmosphere when building. You're not biome locked anymore, instead you can create all sorts of different colors. Think for example clear blue water for your pool or dirty water in a busy city. This can all be done without the need to be in a certain biome.