With this option enabled, the user can "apply" an automatic (i.e., no color) format that will remove all forecolor/hilitecolor formatting from the selected content so that the default color is shown. In addition, the buttons will no longer act as toggles; instead, they will only apply colors (including "applying" the absence of color) and, thus, behave more like MS Word color buttons.
The automatic color format option is enabled by adding the following to the tinymce configuration:
N.B., the commit includes 2 additional fixes to the formatter.remove method:
Adds autocolor option
Conforms key name in vars object
Fixes selection flickering on panel click
Covered in version 4.1.