Sentinels Evolution

I am unclear on the specific designs of the X-men Sentinels, Mark 1 through Mark 7. I have gone through various website databases only to get inconsistent or copied pictures for each incarnation. While I understand there will be a slight warp and woof per artist and era (Just look at the great fluctuations in the Master Mold's design) I'd like to nail down some accepted and consistent design changes for the entire 'Mark' series.

The below webpage has a very clear verbal history, but cites several different images for a specific Sentinel. For example, during the discussion of Sentinel II:

http://www.uncannyxmen.net/db/article/showquestion.asp?faq=4&fldAuto=340&page=2

It displays three different Sentinel designs and/or colors.















Later, it shows the same magenta/purple design for Mark 4:








And doesn't display any designs for Marks 5,6 or 7.

Another web page is the Marvel Wiki Database, but it also has inconsistencies.


So here is what I have thus far: