Let’s improve on the volume indicators for your default Thinkorswim chart. We’ll add easy-to-read labels for Total Volume, Current Bar Volume, Premarket Volume, and more. We’ll also add dual-colored volume bars to get a visual representation of the buying and selling volume for each candle. We’ll accomplish this with thinkScript, the built-in programming language for Thinkorswim. The process is easy and only requires some simple copying and pasting.