XtraFinder can restore colors, albeit with the possibility of crashes. (Note that the offerred version, 0.25.8, requires a 64 bit, NOT 64 bit compatible, Mac, but the dev is no longer offering a 32 bit version; I've got one archived if you'd like to give it a go.)

Searching MacUpdate for "colorful sidebar icons" turns up other possibilities.

(I just upgraded from Snowy all the way to El Cap, and I'll never allow myself to fall so far behind again; sooo many things have changed, no longer work, or require adjustment!)

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire