Hi there!
What you did there is not exactly an outline font. It is a multicolor font I guess. Outline fonts need to be as a separated file. One file for the main bitmap, and another file for the outline bitmap.
The way you did, I guess you need to put the text/outline colors to disabled so the plugin does not mess with your font.
Show me ascreenshot of your plugin parameters and the font parameters so I can take a look.