Bad news on the status of CF-3036 [As an API developer, I would like access to PhasingOverrides and its connection to OverrideGraphicsSettings], I'm afraid. No business case was ever submitted, no priority registered, no association to any wish list entry in the Revit Idea Station created. Hence, nothing ever happened with it.
I just assigned a priority to it and added a mention of your interest expressed here in this thread.
If you are interested in driving this functionality (or lack of it) forward, please do so via the Revit Idea Station.
Whenever you require new or enhanced functionality, the Revit Idea Station is the place to go.
Please search there for a corresponding wish list entry for the suggested functionality and add your comments to it, or create a new one, if none already exists:
https://forums.autodesk.com/t5/revit-ideas/idb-p/302
Tag it as an API wish:
https://forums.autodesk.com/t5/revit-ideas/idb-p/302/tab/most-recent/label-name/api
Ensure it gets as many votes as possible to underline its importance to you and the rest of the developer community.
The Revit Idea Station is currently one of the main driving input forces for Revit API enhancements.
The Revit development team look there. Your comment here in the discussion forum might be overlooked.
Thank you!