Lists

[fatiparty]

I have the following code that uses lists of colour values.  I can see the hex 
values,
but what are the low, mid, and high names there?


  '( (dark .  ((low  . "#006100")
               (mid  . "#008A00")
               (high . "#00B300")))

     (light . ((low  . "#00AD00")
               (mid  . "#008A00")
               (high . "#006600"))) )