Mixed feelings.

One the one hand, using these type of big screenshot pictures for the achievements is really beautiful and has the potential to obviously bring back really specific memories as you look back on them later. That's great


But it could make browsing through them, especially when comparing with friends take a bit long. Don't know, have to test it.

Looks really nice though

A red ring as a reward??? This is the completion graph... Not a trophy like PS.. I actually think they should add trophy like reward like PS... It's a cool concept.. Like if you do all the easy achievement you get a bronze medal.. Medium silver etc...
otherwise the color is probably matching your own highlight color... Or what the game designer chose but from what I have seen it is your chosen highlight color...