UX-261: restyling of brand and background colors
UX-261: restyling of brand and background colors

kzantow/blueocean-plugin,cliffmeyers/jenkins-design-language,jenkinsci/blueocean-plugin,kzantow/blueocean-plugin,kzantow/blueocean-plugin,alvarolobato/blueocean-plugin,jenkinsci/blueocean-plugin,jenkinsci/jenkins-design-language,jenkinsci/blueocean-plugin,jenkinsci/blueocean-plugin,alvarolobato/blueocean-plugin,kzantow/blueocean-plugin,alvarolobato/blueocean-plugin,alvarolobato/blueocean-plugin,jenkinsci/blueocean-plugin,cliffmeyers/jenkins-design-language,cliffmeyers/jenkins-design-language,jenkinsci/jenkins-design-language