Update logo and colors

[cavis]

Logo, colors, and footer links. Oh the colors.

Name	Old Rgb	Old Hex	New Rgb	New Hex
light-blue	rgb(112, 142, 151)	#708e97	rgb(0, 141, 177)	#008db1
blue	rgb(54, 138, 162)	#368aa2	rgb(0, 137, 188)	#0089bc
darker-blue	rgb(43, 113, 135)	#2b7187	rgb(0, 112, 161)	#0070a1
darkest-blue	rgb(44, 89, 102)	#2c5966	rgb(0, 88, 128)	#005880
orange	rgb(245, 159, 81)	#f59f51	rgb(255, 150, 0)	#ff9600
dark-orange	rgb(226, 139, 66)	#e28b42	rgb(236, 130, 0)	#ec8200