You might want to get a signal generator, it would be easier than trying to maneuver a keyboard while in hyperspace. (you can find freeware)

I am looking forward to your findings, but I am pretty sure it's much more complex than just colors per frequency.

Icaros are taught by plant teachers, and are not just visual songs. They contain information, just like any other broadcast of consciousness.

You'll find when you're in hyperspace you can use your voice to harmonize with certain things around you (and seemingly not)

A lot of shamans seek out the dissonance in your existence and work on these areas with their harmonics both vocally and mentally.

The reason none of us have bothered to document colors per frequency is because ... well it just appears to not be that easy.