It isn't difficult at all... Just look into /usr/share/themes/sailfish-default/meegotouch, you'll see zX.Y-folder(s). z1.0 - Jolla 1 z1.25 - Jolla C, Intex AquaFish z1.5(-large) - Jolla Tablet (?) z2.0 - FairPhone 2, OnePlus X You should package all this folders with suitable resolution icons.