Color of cathode to make coolant more BOOM

[DaCoOlNeSs]

I am looking for a color of cathode in order to make my coolant stand out more, right now I have green coolant and a red cathode the cathode makes the coolant look like water, which is not what I want. what color should I get so it stands out more?

 

[Darkatom]

I personally would have to say either blue or white. I prefer blue as its easier on the eyes in a dark room.

 

[Diablo2K]

If your useing antifreeze or UV reactive dye as your coloring then get a UV light, this will really make that coolant POP!