Is it normal to only be attracted to black men when they're a little heavyset?

I'm a gay white man who is generally only attracted to lighter skinned people, but I find myself lusting after black men if they're not the lean athletic type. I'm not talking morbidly obese, and a lot of muscle is ideal, but I don't like them too toned.

Anyone else like this? I also find with other races, I tend to like muscle mass over definition, but there's just something about a hefty black man. I also prefer black people to be dark-skinned. Biracial black people are beautiful, but I'm usually into them.