Benjamin Berg authored Jun 03, 2019 and Benjamin Berg committed Jul 30, 2019

The planckian calculation is much better, but it also means we need to
change the default from 4000K to 2700K to get a similar effect. 2700K is
actually a good value as it is similar to commonly found "warm-white"
artificial lights.

Note that the defaults and range in g-c-c will also need to be adjusted
for this change.