setFrozen: use light blue, black text is difficult to read on a blue background

electrum/gui/qt/amountedit.py

@@ -21,7 +21,7 @@ class FreezableLineEdit(QLineEdit):
 
     def setFrozen(self, b):
         self.setReadOnly(b)
-        self.setStyleSheet(ColorScheme.BLUE.as_stylesheet(True) if b else '')
+        self.setStyleSheet(ColorScheme.LIGHTBLUE.as_stylesheet(True) if b else '')
         self.frozen.emit()
 
     def isFrozen(self):

electrum/gui/qt/paytoedit.py

@@ -256,7 +256,7 @@ class PayToEdit(QWidget, Logger, GenericInputHandler):
 
     def setFrozen(self, b) -> None:
         self.setReadOnly(b)
-        self.setStyleSheet(ColorScheme.BLUE.as_stylesheet(True) if b else '')
+        self.setStyleSheet(ColorScheme.LIGHTBLUE.as_stylesheet(True) if b else '')
 
     def isFrozen(self):
         return self.isReadOnly()