Since app's such as "XtraFinder" haven't been ported to 10.9 DP's, I researched and created color ICNS replacements. The /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/ folder contains the used grey ICNS in addition to [unused] 1024x1024 color ICNS files. Each ICNS files must support the following sizes: - 16x16 72 DPI - 18x18 72 DPI - 32x32 144 and 72 DPI - 36x36 144 DPI - 64x64 144 DPI Using various applications, I created color versions, backed up the grey sidebar icons and replaced them with their color counterparts. Rebooted, and voilà, 10.9 color Finder sidebar icons. If anyone is interested, it's easy and a fun way in learning how OS X operates. Attached a pic.