i think it's definately harder to wear a black leather bag in summer. i'd go with the beige fabric, but i'm partial to brown and tan bags lately. since black is neutral, though, you can wear it whenever, even though you might feel a little uncomfortable with it in summer, so i'd say just buy whichever one you love more, because ultimately you'll get more use out of a bag you love than one that you bought for utility's sake.