Deleted old examples/colors.py and updated documentation

Author: tleonhardt

docs/features/completion.md

@@ -96,8 +96,7 @@ Tab completion of argument values can be configured by using one of three parame
 - `completer`
 
 See the [arg_decorators](https://github.com/python-cmd2/cmd2/blob/main/examples/arg_decorators.py)
-or [colors](https://github.com/python-cmd2/cmd2/blob/main/examples/colors.py) example for a
-demonstration of how to use the `choices` parameter. See the
+example for a demonstration of how to use the `choices` parameter. See the
 [argparse_completion](https://github.com/python-cmd2/cmd2/blob/main/examples/argparse_completion.py)
 example for a demonstration of how to use the `choices_provider` parameter. See the
 [arg_decorators](https://github.com/python-cmd2/cmd2/blob/main/examples/arg_decorators.py) or

examples/README.md

@@ -32,8 +32,8 @@ each:
     - Show how to enable custom tab completion by assigning a completer function to `do_*` commands
 - [cmd2_as_argument.py](https://github.com/python-cmd2/cmd2/blob/main/examples/cmd_as_argument.py)
     - Demonstrates how to accept and parse command-line arguments when invoking a cmd2 application
-- [colors.py](https://github.com/python-cmd2/cmd2/blob/main/examples/colors.py)
-    - Show various ways of using colorized output within a cmd2 application
+- [color.py](https://github.com/python-cmd2/cmd2/blob/main/examples/color.py)
+    - Show the numerous colors available to use in your cmd2 applications
 - [custom_parser.py](https://github.com/python-cmd2/cmd2/blob/main/examples/custom_parser.py)
     - Demonstrates how to create your own custom `Cmd2ArgumentParser`
 - [decorator_example.py](https://github.com/python-cmd2/cmd2/blob/main/examples/decorator_example.py)