Elipse icons are ugly. Fact!
I would like to replace the icons with more flat, monochromatic and minimalist icons, but I can't find documentation on how to change icons from Eclipse's user interface.
How could I do this? It's needed to recompile eclipse?
Best How To :
Most of the icons seem to be stored under \eclipse\configuration\org.eclipse.osgi\bundles\684\1.cp\icons AND in other folders of \eclipse\configuration\org.eclipse.osgi\bundles.
I don't know if the license of Eclipse allows you to change that just check that out, and if you can, you can either change/create them yourself or you can search for icon packs and just replace them, there are plenty of packs out there for example in deviantart (there are some awesome free to use ones there!).
Also... never say "Eclipse icons are ugly. Fact!" or else, it kind of sounds rude and discredits the work of the artist that made them, just say that you don't like them.