2.) Get a Theme. When a bride comes to me, one of the first questions I ask is "What is your theme?" When they say they don't have one, I must admit, part of me knows this will be an uphill battle. Ever heard of the saying, "If you stand for nothing you'll fall for anything?" The same is true with themes. If you don't have one, you will find yourself (subconsciously) with five different unrelated things in your wedding. It's horrid. Pick a theme. The theme doesn't have to be big - look at who you and your fiance are. What are your hobbies? What do you do for a living? Golden Age of Hollywood, Mardi Gras Masquerade, Country, Mediterranean, etc. The possibilities are endless!
And just to simplify it, yes, your colors can be a theme. However, you must be consistent. If your "theme" is going to be green and pink, decide on what shades and stick to it - no forest, chartreuse, lime and mint all over the place. We're at a wedding, not a kaleidoscope. Should you pick colors, try to pick a maximum of three and make sure that they complement each other. Try to pick "in-season" colors as well - pastel pink at a November/December wedding is a bit odd. Your theme will pull your whole event together - from food to favors, everything will coordinate in style.