Good morning Chuck,
There are two scenarios that could cause a plugin to be categorised as red.
1) The "framework" version in the plugins bower.json is not compatible with the framework version in the AT. If your plugins framework version is ">=2.0.0" and your AT framework is "4.3.0" I would expect this to pass
2) The "version" field in the plugins bower.json is not a valid version number (eg it should be of the form x.y.z)
If the version appears to be of the correct format then I would suggest attempting to import the plugin on it's own to see if there is any more information there.
Thanks