Change reference page graphic line across files?

[jdeland1 at comcast.net]

I was wondering if there is an easy way to change the line that you get with the standard "Single Line" on reference pages. I want to update about 300 files with a new line thickness for my Frame Above paragraph tag. I am not able to just import reference pages, otherwise I would do just that. I looked in a mif file, but couldn't find a setting. Any ideas? 

Windows XP Pro 3 
FM 9.0 p255 

Jack DeLand