Line Segment Tool

Hi All,

This is a very simple question but googling it doesn't seem to yield any useful results. I've created some basic lines using the line segment tool, and I'm having trouble making them all a uniform color and thickness. Is there a way to do this "after the fact" meaning after they've already been created? I tried to simply select them all and change their color/thickness, but it doesn't work for me. Please help.