I found the answer to your question about the Kree last night in the Marvel wiki, and posted it above.
“The original Kree had blue-colored skin, but a second racial group with pink skin resembling that of human Caucasians emerged over the millennia. The blue-skinned “purebred” Kree have become a small, but powerful, minority. Pink Kree are much more durable than their blue racial brethren.”
As for Ronin’s comment - he could have been saying that to simply save face while beating a hasty retreat or it’s possible he did spend time trying to capture her in the years between this film and the end of Guardians. I don’t think we’ll ever see a sequel detailing her adventures in space over the last 20-30 years, but it’s reasonable to assume that wasn’t the last she saw of Ronin the Accuser.