Add color customization to the CAPTCHA helper
Ref: Issue #867 & PRs #1405, #2485
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 6f08dcb..4cbbda7 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -123,10 +123,14 @@
- Deprecated function ``trim_slashes()`` - it's just an alias for PHP's native ``trim()`` (with a slash as its second argument).
- Deprecated randomization type options **unique** and **encrypt** for funcion :php:func:`random_string()` (they are only aliases for **md5** and **sha1** respectively).
+ - :doc:`CAPTCHA Helper <helpers/captcha_helper>` changes include:
+
+ - Added *word_length* and *pool* options to allow customization of the generated word.
+ - Added *colors* configuration to allow customization for the *background*, *border*, *text* and *grid* colors.
+
- :doc:`Directory Helper <helpers/directory_helper>` :php:func:`directory_map()` will now append ``DIRECTORY_SEPARATOR`` to directory names in the returned array.
- :doc:`Language Helper <helpers/language_helper>` :php:func:`lang()` now accepts an optional list of additional HTML attributes.
- Deprecated the :doc:`Email Helper <helpers/email_helper>` as its ``valid_email()``, ``send_email()`` functions are now only aliases for PHP native functions ``filter_var()`` and ``mail()`` respectively.
- - :doc:`CAPTCHA Helper <helpers/captcha_helper>` :php:func:`create_captcha` added word_length and pool options for setting length of randomly generated captcha word, and what characters to select from.
- Database