Improve data view example performance by limiting colors #1070
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This is a trivial work-around to make the data view examples more performant.
The
Colorclass instances are fairly heavyweight as they have lots of observers; they are intended for the use-case where there are a handful of colors that are shared and mutable. Before this change, the examples were creating lots of color objects. We now instead select randomly from a much smaller set. This dramatically improves start-up time.