* fix static viz waterfall colors

* tests

* Pass colors into StaticChart as third argument

This might not be the best design, so changes are welcome, but I added this to properly consider the case where the
application-colors are different, but the chart has no viz-settings: application-colors were being ignored (as they
were passed into options, but not pulled out of options into the colors arg).

* review

Co-authored-by: Adam James <adam.vermeer2@gmail.com>