Foldout background appears darker, button order is incorrect, and template items darker than window background in Template Window

How to reproduce:

1. In Project Browser, right-click and navigate Create > Visual Effects > Visual Effect Graph
2. Ensure that VFX Template window is open

Actual Results:
Foldouts have a darker background color. The buttons do not follow the correct order in the Unity dialog. Template items are darker than the window background.

 

 

Expected Results:
Foldouts should have the same background as the window or no background at all. Buttons should be properly laid out, respecting the Primary, Secondary, and Destructive button structure. The background should be darker than the items (Use the Unity alternate row color for list of items) .Title Case should be used for button labels

Reproducible with versions: 6000.3.0a2

Not reproducible with versions: untested

Can't test with versions: 

Tested on (OS): macOS, windows

Notes:

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