CPU: Ryzen 5 2600
GPU: RX 570
OS: Windows 10 Home
Broken: Blender 2.8 Beta 9149e894210
Short description of error:
As far as I can tell, this setting is no longer needed as it can only be used with the Blender internal render mode which has been removed in 2.8.
Exact steps for others to reproduce the error:
To use this setting in Blender 2.79, you had to enable this setting:
This setting is limited to Blender internal and is no longer available and thus makes the object colour setting in the object menu redundant.