tweaking KC theme, was a little too pink

data/themes.yml

@@ -97,4 +97,4 @@
 - { 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' }
-- { colors: '#B51835,#A51835,#FFFFFF,#B51835,#FF1835,#FFD20F,#FFE20F,#FF4545', name: 'Kansas City Chiefs' }
+- { colors: '#B51815,#A51815,#FFFFFF,#B51815,#FF1815,#FFD21F,#FFE21F,#FF5555', name: 'Kansas City Chiefs' }