Holistic Testing: Distance and Direction Select Output dialog is not dark-theme compliant

[mfunk]

From Holistic Testing on 8/9/2019:

onenote:///\tahoe\holistic\ArcGISProfessional\Srinivas\Pro_v2_5\ProInternalHolistic_v2_5\August2019\Friday_08_09_2019.one#Pro%20for%20Intel&section-id={F5163543-00ED-4E04-962A-EF349811C6D0}&page-id={495373F4-9079-4A22-A025-E02A20F312F4}&end

Row 30, Tester Max:

[Dbarnes1]

similar to Esri/coordinate-conversion-addin-dotnet#562