Those are not the colors I would choose, but remember, it’s YOUR wedding! Don’t let other people dictate your preferences. Maybe you should not talk to too many people about what you’re thinking about yet. I made that mistake while planning my wedding, and got lots of unsolicited advice. My MIL thought I should get orange bridesmaid dresses. I HATE orange. I was like, is this your wedding? I don’t think so.

I mean come on, it’s not as if she would have to wear the dress!
I admit, when I first heard “orange and fushia,” I thought “ew,” but I actually liked the dresses in the link you provided.
I do think you should take your bridesmaids’ feelings into account, since they do have to buy the dress and wear it. Maybe try to find something that looks good on them and that they can live with that’s still a color you like. You said all three of your bridesmaids like the colors, so I’d say you have nothing to worry about. No one else’s opinion matters, least of all total strangers on the internet.
I’ve loved the color pink since I was a little girl, and I wanted pink bridesmaids dresses. As it turned out we got lavender dresses, since it was a dress all three of my bridesmaids (and me) liked. It was ok with me – lavender is my second-favorite color, and the dress was really pretty, with little white flowers on the front. Maybe I should have just ordered pink dresses and said “you’re wearing this!” but I’m a bit of a pushover. Cest le vie.
In a sense, this IS your day: Your day to make as many people happy as you can. That doesn’t mean letting them walk on you, and at some point you have to stand firm so as not to get yourself pulled to pieces, but generally, Your Day is for other people.
I’m not sure I completely agree with this. (Though I don’t like this idea in our culture that a wedding is “all about the bride.” It’s about the bride AND the groom.) You should definitely make sure your guests are comfortable and have fun, but I’m sorry, Aunt Millie gets NO SAY in the wedding colors, the type of flowers or the flavor of cake. I know if I were a bridesmaid, I would wear whatever the bride wanted. I would want her and her husband to have “their day,” just like my husband and I had ours. My only condition would be that the dress be within an agreed-upon budget. It’s not fair to try to mess with someone else’s wedding. Why on earth do these people *care *what colors you have?!?
Don’t get me wrong, I am NOT saying you should indulge in excessive egoism at your wedding or be rude to guests. Only that they get no say in the details of the planning. At our wedding, we had a fantastic reception with a great DJ. Everyone had a great time. I’ve been to weddings with speech after boring speech about how great the couple is; at our wedding, we had the best man’s toast and that was it. We wanted to get right to the dancing.

Everyone loved our wedding – it was a win-win situation.