Fix border color for try blue ocean button (#617)
Fix border color for try blue ocean button (#617)

This is #598 follow up fix.
alvarolobato/blueocean-plugin,kzantow/blueocean-plugin,jenkinsci/blueocean-plugin,kzantow/blueocean-plugin,ModuloM/blueocean-plugin,kzantow/blueocean-plugin,jenkinsci/blueocean-plugin,kzantow/blueocean-plugin,ModuloM/blueocean-plugin,alvarolobato/blueocean-plugin,jenkinsci/blueocean-plugin,jenkinsci/blueocean-plugin,alvarolobato/blueocean-plugin,ModuloM/blueocean-plugin,alvarolobato/blueocean-plugin,jenkinsci/blueocean-plugin,ModuloM/blueocean-plugin