Fix market map styles (#1285)
Fix market map styles (#1285)

* fix for MarketMap update when cell was selected

* create new list instead of setting length

Co-authored-by: Andre Celere <bc9b051c730554783f8386ddaabc755f3f755b6d@gmail.com>
bloomberg/bqplot,ChakriCherukuri/bqplot,bloomberg/bqplot,ChakriCherukuri/bqplot,bloomberg/bqplot,ChakriCherukuri/bqplot