core: make output white for now

lib/vagrant/plugin/v2/command.rb

@@ -188,7 +188,7 @@ module Vagrant
           machines.reverse! if options[:reverse]
 
           # Go through each VM and yield it!
-          color_order = [:green, :cyan, :magenta, :yellow, :blue]
+          color_order = [:white]
           color_index = 0
 
           machines.each do |machine|

lib/vagrant/ui.rb

@@ -277,6 +277,7 @@ module Vagrant
         blue:    34,
         magenta: 35,
         cyan:    36,
+        white:   37,
       }
 
       # This is called by `say` to format the message for output.