HTML Help

Ok. I have a few more posts to add that are in my drafts, but first I need help! Anyone good with HTML and blogging? Awhile back I couldn't get my title to center, so I googled around and found a way to do it. Now I can't remember how to undo it. I still want it centered, but design is not letting me change the color at all! It's driving me nutz! I want it lighter so people can actually see it! I may just have to delete it all together. Help! Please?