CalendarHeatmap:custom color palette

Build 1240 on 2131-clean-up-stories-to-fully-enable-chromatic
1200px
Reviewing disabled
Baseline History
Build 1240f6002b3
Current build. There are unaccepted changes, so build 1206 is still the baseline.
Build 120653402ea current baseline
Accepted by Zach Stence.
Build 996a35ebc4
Accepted by Zach Stence.
Build 927c24f8ad
Accepted by Archie Sarre Wood.
Build 85522c35f6
Accepted by Zach Stence.
Commenting is disabled because there's a newer build on this branch