The Microsoft ClearType registry settings are stored in the registry key below. Microsoft did not document each step of the process. You should be able to reverse engineer each step by comparing the differences in those registry values for each setting.
HKEY_CURRENT_USER\Software\Microsoft\Avalon.Graphics\<displayName>
Source: https://msdn.microsoft.com/en-us/library/aa970267(v=vs.100).aspx
Alternatively, for a more tedious approach, you could screen capture each page and compare pixel color values.