I don't always use a runner on my table(s), depending on my 'mood' LOL.
I like to change to look in my livingroom more or less regular, and there for I have sets 1 or 2 runners with matching candlesticks, flowers, pillow covers etc.
I have a set in blue/yellow, in reds and in purples. The sets I don't use at that moment, are in a crate (with lid) in the cellar.