macOS Sierra Theme for OS X Tiger Back in October, @swamprock was making a Sierra Theme for Tiger. Sadly, he has left the forum now, so I'll be continuing his work and creating a full macOS Sierra Theme for OS X Tiger! @swamprock's work, which I will be building on. The Theme Will Include... - Icons -Full UI (Traffic Lights, Buttons, etc.) -About This Mac -PPCAppStore -And More! Release is scheduled for mid-Summer! Will require a G3, G4, or G5 Mac running OS X 10.4.11 Tiger. TenFourFox 45.4 or higher must be installed into /Applications and cannot be renamed.