Moka icon theme is designed with a simplistic, flat style, using simple geometry & basic colouring.
Despite being a modern theme, Moka does not use vector icons. Instead each icon has been pixel-perfectly-designed in seven sizes for the best result throughout your desktop.
moka-icon-theme. similar to this link: askubuntu.com/questions/364296…. uninstall the theme and reinstalling will result in a message: "The following packages have unmet dependencies: