* Added options to twinkle.py to set basecolor and max difference   from baseline color for tighter control over colour drift etc. for   more gentle twinkling.
* Added options to twinkle.py to set basecolor and max difference
  from baseline color for tighter control over colour drift etc. for
  more gentle twinkling.

jpwarren/holideck,jpwarren/holideck,jpwarren/holideck,jpwarren/holideck