Know the Filter Forge version of each filter INSIDE Filter Manager?

In FF 4.0 filter manager has been made a good work adding small stars or symbols to each filter to show something about the filter

In the FF library is shown with what version this filter was done and I wonder if it could be shown in the same way some small number or symbol to show (maybe optionally) the version number of that filter

As there is now 4 versions, it could be good to know wich one is from wich version

And also now considering that the FF 3 (and older) color controls does not work with the new groups is good to know what filters need to be changed and which are the new ones.