>>> from colormap import colormap

>>> colormap(1.2)
'violet'
>>> colormap(5.0)
'dark blue'
>>> colormap(12.5)
'sky blue'
>>> colormap(10.0)
'sky blue'
>>> colormap(15.0)
'green'
>>> colormap(0.0)
'violet'
>>> colormap(-3.5)
'white'
>>> colormap(-3)
'white'
>>> colormap(-0.2)
'white'