Merge pull request #48 from rselwyn/master

Added 'Mean Green' theme

data/themes.yml

@@ -94,3 +94,4 @@
 - { colors: '#327C7E,#001F7E,#001F7E,#FFFFFF,#001F7E,#FFFFFF,#C0C0C0,#C0C0C0', name: 'Windows 95' }
 - { colors: '#F0EDE0,#0054E3,#0054E3,#FFFFFF,#0054E3,#000000,#ED6D3A,#ED6D3A', name: 'Windows XP' }
 - { colors: '#0D83DD,#0064BE,#86C620,#FFFFFF,#648C0F,#FFFFFF,#9DFF00,#86C620', name: 'FreshBooks' }
+- { colors: '#278F0D,#19780C,#070708,#FFFFFF,#19780C,#FFFFFF,#F7FF00,#FF8669', name: 'Mean Green' }