Darko is an icon pack. It is not a stand alone application, you need a third party launcher to apply it. Darko: A dark set with shadow for depth. Use it with any dark wallpaper for better depth effect. What's included: 3. 000 + HD icons (256x256). 40+ matching HD cloud wallpapers! Launchers support: Action, Adw, AdwEX, Apex, Atom, Aviate, GO, Next, Nova, Smart, Solo.