Can I revert to the Mountain Lion style labels instead of Mavericks tags? How?
I have the same problem, and so do others: just search the Apple support discussions. The only solutions currently are:


Reinstall OS X 10.8
Install PathFinder, a third party patch that brings back labels
If PF is too pricey, try asking binaryage (makers of TotalFinder) to also enable this feature, as TotalFinder is only $18, compared to Pathfinder at nearly $40.


There's also a few other semi-workarounds, like coloring folders using 3rd party tools (though this is tedious and only works for folders, not files)

And remember to tell Apple that you want labels back! If enough people speak out, they will change it.