Well, by grey I guess I meant no border. (As you most likely know), the copies of the Solid & Empty fills simply go to the top because when you paste them in they are just appended a new ID number and these 'hard coded, grey/borderless' fills are sorted by their ID numbers, as opposed to the other two varieties that are sorted by name. That's why I encourage the use of blank spaces before the name of ANY custom attribute. One blank space for an office standard and two for project specific. Too easy!
Don't you get tired of fighting the constant 'fill infiltration' battle, by dumping all these hard coded fills? I sure did. They are needed for so many things, (esp. in the Extras menu) that it proves to be more trouble than it's worth. Similar to deleting materials or changing pen 91. It may just be me, but I hate seeing the word MISSING appear randomly throughout a brand spankin' new CAD template! Doesn't do much to gain the confidence of new users either.
Anyway, I wish GS would (and I have asked them - for what it's worth!) to address the availability (and nuisance) of hard coded fills. Hopefully they will make them all (except Solid & Empty) appear invisible to the end user.
Just my two cents!
Cheers,
Link.