Two more color examples

Author: rocky

mathics/builtin/drawing/rgbcolor.py

@@ -105,6 +105,13 @@ class Magenta(_ColorObject):
 
 
 class LightBlue(_ColorObject):
+    """
+    >> Graphics[{LightBlue, EdgeForm[Black], Disk[]}]
+     = -Graphics-
+
+    >> Plot[Sin[x], {x, 0, 2 Pi}, Background -> LightBlue]
+     = -Graphics-
+    """
     text_name = "light blue"
     rules = {"LightBlue": "RGBColor[0.87, 0.94, 1]"}
 

mathics/builtin/graphics.py

@@ -3142,6 +3142,12 @@ class Darker(Builtin):
         <dd>is equivalent to 'Darker[$c$, 1/3]'.
     </dl>
 
+    >> Graphics[{Darker[Red], Disk[]}]
+     = -Graphics-
+
+    >> Graphics3D[{Darker[Green], Sphere[]}]
+     = -Graphics3D-
+
     >> Graphics[Table[{Darker[Yellow, x], Disk[{12x, 0}]}, {x, 0, 1, 1/6}]]
      = -Graphics-
     """