In the MCU when we see the Kree they have blue skin and blue blood, such as Yon Rogg's team and Ronan the Accuser.
However when we see Yon Rogg and Mar Vell they don't have blue skin but rather more human colored skin and while this is the same with Carol she was actually human and only has blue blood because it was Yon Rogg's blood infused into her.
So what species is Mar Vell and Yon Rogg? if they are Kree is there a reason why they don't have blue skin like most all other Kree?