The components are wrappers and expose a public property that gives access to the native control.
1) The text color can be set with
The style (bold, italic, ...) of the text will need to be set with the attribute string, this is currently not implemented, only the font size and name can be changed with the Font property TMSFMXNativeNSLabel1.Font.
2) Autosizing is currently not implemented, this does not directly exist on native level and requires manual calculation of the text size, we will investigate here if we can add the calculation internally.
3) The tabview has different modes, the default mode adds a margin to it, the margin is not taken into account when positioning controls.
4) Can you call TMSFMXNativeNSButton1.UpdateFrame afterwards?
We have added the request to our feature request list.