Adds Sidekicker themes

[benmardana]

Adds two themes related to sidekicker.com

- { colors: '#FAFAFB,#E4E4E4,#A2E3F7,#27343B,#D0F1FB,#27343B,#41C6F1,#41C6F1', name: 'Sidekicker Light'}
- { colors: '#27343B,#243036,#A2E3F7,#27343B,#243036,#E4E4E4,#75D5F3,#75D5F3', name: 'Sidekicker Dark'}