add Autumn and Christmas themes

data/themes.yml

@@ -157,3 +157,5 @@
 - { colors: '#ff8800,#000000,#ffffff,#000000,#4a5664,#000000,#000000,#736e65', name: 'Halloween'}
 - { colors: '#f1f1f1,#DDDDDD,#ff5d02,#FFFFFF,#DDDDDD,#000000,#28a05a,#ff5d02', name: 'Spreadfamily'}
 - { colors: '#2C2C26,#229725,#13C217,#FFFFFF,#229725,#FFFFFF,#13C217,#439AEA', name: 'Chargify'}
+- { colors: '#194234,#9c2e33,#E7C12e,#194234,#9c2e33,#FFFFFF,#ee6030,#9C2E33', name: 'Autumn'}
+- { colors: '#138724,#1B5E48,#db2e3f,#FFFFFF,#2D9A48,#FFFFFF,#1B5E48,#DB2E3F', name: 'Christmas'}