Add TYPO3 CMS theme (#147)

TYPO3 CMS colors :)

data/themes.yml

@@ -190,3 +190,4 @@
 - { colors: '#373352,#1a123b,#a347b7,#FFFFFF,#1a123b,#d6e0ff,#d15fea,#A347B7', name: 'Smooch.io'}
 - { colors: '#8892BF,#4F5B93,#4F5B93,#FFFFFF,#CBCCD4,#FFFFFF,#4F5B93,#F15340', name: 'PHP'}
 - { colors: '#324050,#283542,#4b9ad9,#FFFFFF,#283542,#CFD8E5,#3bb594,#EB4D5C', name: 'REDAXO'}
+- { colors: '#292929,#252525,#252525,#f5f5f5,#252525,#B5B5B5,#79a548,#c83c3c', name: 'TYPO3'}