Research filter formatting should show which technologies can be researched

Not a bug per se, but a suggested UI enhancement.  The new preset filters on the research page are handy.  I filtered for Rockets to help me see which rocket-related technologies I still needed to research.  Some items in the filtered list were greyed out while others were white.  I expected this formatting to be an indication of which technologies I could research next, or had already completed, or didn't have prerequisites for.  That would have been helpful.  Instead it was simply an indication of which items literally contained the word "rocket" in the name, which wasn't helpful when deciding what I could research next.