fix bug in del tower and some ui changes

touchbuttframe.h

@@ -19,7 +19,7 @@ class TouchButtFrame : public QFrame
     Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
 public:
     TouchButtFrame(QWidget * parent = 0,
-                   QColor red = Qt::red, QColor green = Qt::green, QColor white = Qt::white, QColor push = Qt::yellow,
+                   QColor red = Qt::darkRed, QColor green = Qt::green, QColor white = Qt::white, QColor push = Qt::yellow,
                    Qt::Orientation orientation = Qt::Horizontal);
     void setButtons(const QStringList &captions);
     QStringList buttons();