DateChooser visual glitch in Stratus skin

[claudiobosticco]

"SNAPSHOT_v12.1d_2019-05-28/AllModules Development Only"

tested with Chrome on OSX

Hello, I just noticed that in the Stratus skin the dateChooserNavButtonOver/Focused/FocusedDown styles have the same color of the dateChooserNavButton, so the label aren't readable.

[Isomorphic]

This has been fixed for builds dated May 31 and later.