NCI-Agency/anet#2954: Change order of used chart colors
NCI-Agency/anet#2954: Change order of used chart colors

For the aggregation widgets we used to pick colors from the end of
the CHART_COLORS array, but the colors in the beginning of the
array have a better contrast.

NCI-Agency/anet,NCI-Agency/anet,NCI-Agency/anet,NCI-Agency/anet,NCI-Agency/anet