A very interesting read. I changed my macro to:
\define[2]\Citation{
  \blank
  \startframedtext[middle][
    align=middle,
    background=color,
    backgroundcolor=lightgray,
    corner=round,
    rulethickness=2bp
    ]
    {\bf #2}
    \blank[small]
    \rightaligned{\it #1}
  \stopframedtext
  \blank
}

This results in an even more pleasing effect. (In my opinion.)