odd feedback from some sellers on ebay

I have been looking through a bidder's profile, and they have all green positive feedback on ebay, but there are a couple of bad feedbacks as buyers, but the odd thing is that they are marked with green like a positive feedback instead of red. Why is this?

I also looked at their ebay page, and they have a note about making sure that items are described as they are or they will open a return case.

Are they a serial refunder? It is really hard to tell, since the vast majority of their feedback is positive, in fact it is 100% green, even though there were a couple of bad ones that were marked green as well.

 

Ok, thanks, their tone overall makes me a little nervous they have majority good feedback but they seem like a fussy buyer.

A couple of the feedbacks were bad; one called them a liar, and their line on their eBay page reads make sure item description is accurate or I will open a refund case.

I make sure my descriptions are accurate.