Highlighting beginning do end blocks ( change colors )

Currently my do end blocks are highlighted as shown below its a very light highlight what are the settings that I need to be changed? I currently use the Tomorrow-Night.vim color scheme

http://content.screencast.com/users/web-development-test/folders/Snagit/media/62043d0b-0350-4d35-98d0-914dbf6e8f12/2016-02-24_16-51-42.png

I believe it’s defined in the rubyControl call within the color scheme file.