adding Dolly theme

data/themes.yml

@@ -106,3 +106,4 @@
 - { colors: '#212121,#212121,#607D8B,#FFFFFF,#607D8B,#FFFFFF,#607D8B,#607D8B', name: 'Material Dark Blue Grey' }
 - { colors: '#2F343B,#2F343B,#FD7532,#FFFFFF,#FD7532,#FFFFFF,#FD7532,#FD7532', name: 'Hummingbird' }
 - { colors: '#CEC18A,#ffffff,#000000,#FFFFFF,#FFFFFF,#000000,#ffff00,#000000', name: 'Pittsburgh Penguins' }
+- { colors: '#FAFAFA,#F3F3F3,#E7412A,#FFFFFF,#EDEDED,#302F2E,#8DA600,#0EA7B5', name: 'Dolly' }