Research how viscolor.txt colors are used in the oscilloscope visulization

> Rows 18 to 22 pertain to the oscilloscope colors. They function in the same fashion as the Spectrum Analyzer. Row 18 controls the colors that is displayed at the troughs and the row 22 is the color that is displayed at the crest. Each row between 18 and 22 sets a different level of the whole wave.

-- http://wiki.winamp.com/wiki/Editing_the_Configuration_Files#Configuration_File_.7C_VisColor.txt

Using the native app, try changing these colors to see if we can determine the function each color has.