Using the same color for two different semantic opens the door to ambiguous user interfaces for end users.
Of course we can always customize with CSS but if by default caspian comes *without* this color used for two different things, that helps.
On TreeView-2 attachment my mouse cursor is over row #2, "Project2"..
On TreeView-TableView-3 attachment my mouse cursor in over row #2, "TT-6".