[xmonad] Make the red border around active window more visible

Dear Folks, I sometimes have trouble spotting the narrow 1-pixel wide red border that indicates the active window. I'd like to make it more obvious to myself. Any suggestions on how I could go about that? -- Nick Urbanik http://nicku.org nicku@nicku.org GPG: 7FFA CDC7 5A77 0558 DC7A 790A 16DF EC5B BB9D 2C24 ID: BB9D2C24