Fix bug in reset of mode filters. Make forecast labels theme-dependent.

fixed_aspect_ratio_label.py

@@ -1,14 +1,27 @@
 from PyQt5.QtWidgets import QLabel
-from PyQt5.QtCore import QSize, Qt
+from PyQt5.QtCore import Qt
 
 class FixedAspectRatioLabel(QLabel):
     def __init__(self, parent = None):
         super().__init__(parent)
         self.pixmap = None
 
-    def rescale(self, w, h):
-        self.resize(QSize(w, h))
+    def set_default_stylesheet(self):
+        self.setStyleSheet("""
+            color: #ffffff;
+            background-color: #666666;
+        """)
+
+    def make_transparent(self):
+        self.setText('')
+        self.setStyleSheet("background-color: transparent;")
+
+    def apply_pixmap(self):
         if self.pixmap:
             self.setPixmap(
                 self.pixmap.scaled(
                     self.size(), Qt.IgnoreAspectRatio, Qt.SmoothTransformation))
+
+    def rescale(self, size):
+        self.resize(size)
+        self.apply_pixmap()