Hi Kathy,
I agree that you should be able to change what you need to. The following gist will allow you to override both style sheets (however the ink filter didn’t make it into the 1.0.4 release and will be out in 1.0.5). So at the moment you can only override the dashboard filter as I have written above.
https://gist.github.com/digitalchild/3877a44eb367cbcede8c
With regards to fonts and colours included in our plugin, I will attempt to remove anything that isn’t core to the overall layout of the plugin. I want to ensure that our plugin is inheriting as much style as possible from the theme to ensure that it creates a seamless look and feel. I will be removing the colours and font-weights that you have mentioned in the next release also.
cheers,
Jamie.