They had a pretty extensive skin color palette, as well as hair. Although they had limited face customizations, considering this game is only in EA, I think it would be a little premature to judge them on diversity points for the character creator. Even still they offered a few different race customizations, and I am sure there will be more in the final release.
I'm not making any judgements, I like and respect Larian Studios immensely. I'm just putting it out there so that it doesn't get overlooked considering the scope of the game. Skin color is only a minor aspect of ethnic variation. There are many combinations of eye, nose, mouth, cheek and jaw shapes/sizes that could be represented. A lot of the faces look kinda samey and indistinct. The hair and skin options are great, though I wouldn't say no to more.
I enjoy designing/playing a variety of characters in these types of games, making up head-cannon origin stories based on different backgrounds and such. I'm not really a self-insert kinda guy so I appreciate it when games give you as many options to choose from. I feel like that is a huge part of what makes DnD great and Larian could definitely do more to show that for this game.