The Chromatic [Vacuum] is a build I have been playing with a lot recently, making tweaks and changes as I find better stuff to use on it and I have come down to two different ways to use this build

Use A) You use a Heat Emissive and a Viral Exalted Blade build for consistency
Use B) You use a Cold Emissive with [Archon Flow] to generate extra energy every here and there with either a Corrosive or Gas Exalted Blade

The ability usage is simple
1 - Slash Dash for full Invincibility
2 - Radial Blind simple CC and an easy get off me tool
3 - Pull for grouping and also a quick CC
4 - Exalted Blade is pretty self-explanatory and is your main way of killing things