ENH: We do not yet support changing the color, so change color to prop

psychopy/tests/test_all_visual/test_slider.py

@@ -3,6 +3,8 @@
 
 from __future__ import division
 
+import pytest
+
 from psychopy.visual.window import Window
 from psychopy.visual.slider import Slider
 
@@ -28,3 +30,9 @@ def test_color(self):
                 assert l.color == color
 
             del s
+
+    def test_change_color(self):
+        s = Slider(self.win)
+
+        with pytest.raises(AttributeError):
+            s.color = 'blue'

psychopy/visual/slider.py

@@ -149,7 +149,7 @@ def __init__(self,
         self.flip = flip
         self.granularity = granularity
         self.textSize = textSize
-        self.color = color
+        self._color = color
         self.font = font
         self.autoDraw = autoDraw
         self.depth = depth
@@ -215,6 +215,11 @@ def horiz(self):
         """(readonly) determines from self.size whether the scale is horizontal"""
         return self.size[0] > self.size[1]
 
+    @property
+    def color(self):
+        """ Color of the line/ticks/labels according to the color space.
+        """
+        return self._color
 
     def reset(self):
         """Resets the slider to its starting state (so that it can be restarted