Acid Lakes In The End World

Main Feature:

The end world still feels very dull. There should be unnaturally colored ponds with acid. When you jump into them they fill kill a little slower than lava. 

Bonus Features:

You can collect acid with buckets and make acid arrows that do a lot more harm on mobs and players. 

You can make acidic potions. 

You can make a normal lake acidic by adding a bucket of acid water.