Changed UI colors

New color scheme
Inactive player TableZone is darker
Looking at the QPixmap documentation: "Note that QPixmaps are automatically added to the QPixmapCache when loaded from a file". When added to the cache they are assigned a key. "If two pixmaps are inserted into the cache using equal keys then the last pixmap will replace the first pixmap in the cache". More details can be read here (http://qt-project.org/doc/qt-5/qpixmapcache.html#details), but it seems like we only use one QPixmap, even if 2 or more point to the same location on disc.