Add stacklevel to Deprecation of Excolor and filter accordingly.

IPython/core/excolors.py

@@ -165,7 +165,8 b' class Deprec(object):'
 
     def __getattr__(self, name):
         val = getattr(self.wrapped, name)
-        warnings.warn("Using ExceptionColors global is deprecated and will be removed in IPython 6.0", DeprecationWarning)
+        warnings.warn("Using ExceptionColors global is deprecated and will be removed in IPython 6.0",
+                DeprecationWarning, stacklevel=2)
         # using getattr after warnings break ipydoctest in weird way for 3.5
         return val
 

IPython/testing/iptest.py

@@ -56,6 +56,8 b" warnings.filterwarnings('error', message='.*onlyif_any_cmd_exists.*', category=D"
 
 warnings.filterwarnings('error', message='.*disable_gui.*', category=DeprecationWarning, module='.*')
 
+warnings.filterwarnings('error', message='.*ExceptionColors global is deprecated.*', category=DeprecationWarning, module='.*')
+
 if version_info < (6,):
     # nose.tools renames all things from `camelCase` to `snake_case` which raise an
     # warning with the runner they also import from standard import library. (as of Dec 2015)