Update the 4 Themes.

Mac buttons now fixed on Dark and Hi-Contrast.
New colours added but not used yet.
Rotated pip added but not used yet.

src/AllThemeResources.h

@@ -183,6 +183,7 @@ from there.  Audacity will look for a file called "Pause.png".
    DEFINE_IMAGE( bmpRecordPointer, wxImage( 20, 20 ), wxT("RecordPointer"));
    DEFINE_IMAGE( bmpRecordPointerPinned, wxImage( 20, 20 ), wxT("RecordPointerPinned"));
    DEFINE_IMAGE( bmpGrabberDropLoc, wxImage( 20, 20 ), wxT("GrabberDropLoc"));
+   DEFINE_IMAGE( bmpSliderThumbRotated, wxImage( 20, 11 ), wxT("SliderThumbRotated"));
 
    SET_THEME_FLAGS(  resFlagNone  );
    DEFINE_IMAGE( bmpSliderThumb, wxImage( 11, 20 ), wxT("SliderThumb"));
@@ -366,3 +367,14 @@ from there.  Audacity will look for a file called "Pause.png".
    DEFINE_COLOUR( clrTrackBackground,     wxColour(  20,  20,  20),  wxT("TrackBackground") );
 
 
+   DEFINE_COLOUR( clrPlaceHolder1,           wxColour(  255,  255,  20),  wxT("Placeholder1") );
+   DEFINE_COLOUR( clrGraphLabels,         wxColour(    0,    0,   0),  wxT("GraphLabels") );
+   DEFINE_COLOUR( clrSpectroBackground,   wxColour(  255,  255,  20),  wxT("SpectroBackground") );
+   DEFINE_COLOUR( clrScrubRuler,          wxColour(  255,  255,  20),  wxT("ScrubRuler") );
+   DEFINE_COLOUR( clrTimeHours,           wxColour(  255,  255,  20),  wxT("TimeHours") );
+   DEFINE_COLOUR( clrFoxusBox,            wxColour(  255,  255,  20),  wxT("FocusBox") );
+   DEFINE_COLOUR( clrTrackNameText,       wxColour(  255,  255,  20),  wxT("TrackNameText") );
+   DEFINE_COLOUR( clrMidiZebra,           wxColour(  255,  255,  20),  wxT("MidiZebra") );
+   DEFINE_COLOUR( clrMidiLines,           wxColour(  255,  255,  20),  wxT("MidiLines") );
+
+