Background Problems

I wanted to give the blog a new look and as many of you have seen the three I have picked I just loved them all well ever since I have changed the look I have had people having problems viewing it. I am so bummed!!!!!!! But until I figure out what is going on I will have to pick one of their backgrounds they provide. I just loved all the new ones. I just can't figure it out!!!!!!! Any advice please help!!!
Had to get that off my chest.