Uhm it does not matter, you get it all with PCs and NPC's

Also you see Sadu,if you are looking for something of a different color in a cutscene alongside with Cirina...

Also you are not really missing out... you meet automatons and buns on the moon as well... which could cater to variations as well... as for persons of color... I don't know what the need would be the game alone represent several different races in all colours shapes and sizes as well.