PyQt doesn't provide repr for QColor, but it's highly desirable!

So monkey patch one in ourselves

python/PyQt/PyQt5/QtGui.py

@@ -22,3 +22,48 @@
 __copyright__ = '(C) 2015, Matthias Kuhn'
 
 from PyQt5.QtGui import *
+
+
+def __qcolor_repr__(self: QColor):
+    if not self.isValid():
+        return '<QColor: invalid>'
+    elif self.spec() == QColor.Rgb:
+        return '<QColor: RGB {}, {}, {}, {}>'.format(
+            self.red(),
+            self.green(),
+            self.blue(),
+            self.alpha()
+        )
+    elif self.spec() == QColor.Hsv:
+        return '<QColor: HSV {}, {}, {}, {}>'.format(
+            self.hsvHue(),
+            self.hsvSaturation(),
+            self.value(),
+            self.alpha()
+        )
+    elif self.spec() == QColor.Cmyk:
+        return '<QColor: CMYK {}, {}, {}, {}, {}>'.format(
+            self.cyan(),
+            self.magenta(),
+            self.yellow(),
+            self.black(),
+            self.alpha()
+        )
+    elif self.spec() == QColor.Hsl:
+        return '<QColor: HSL {}, {}, {}, {}>'.format(
+            self.hslHue(),
+            self.hslSaturation(),
+            self.lightness(),
+            self.alpha()
+        )
+    elif self.spec() == QColor.ExtendedRgb:
+        return '<QColor: Extended RGB {}, {}, {}, {}>'.format(
+            self.redF(),
+            self.greenF(),
+            self.blueF(),
+            self.alphaF()
+        )
+
+
+# PyQt doesn't provide __repr__ for QColor, but it's highly desirable!
+QColor.__repr__ = __qcolor_repr__