_PaletteFrame
BRect _PaletteFrame() const;
BRect bounds = _PaletteFrame();
BRect rect = _PaletteFrame();
BRect rect = _PaletteFrame();
ceilf(_PaletteFrame().Height() / 3));
_DrawColorArea(offscreenView, _PaletteFrame());
BRect rect = _PaletteFrame();