Add some selfies to your site and make it obvious that you are no longer a blonde.
Questions from the newbie
All my photos are from this summer on my site that I paid a top quality photographer for... Now I am a dark brunette not a blonde. Is this a big deal ???
Questions from the newbi
Ok so the first thing I would do is change your profile from blonde to brunette. In a search of reviews you currently come up as a blonde. Go to your profile and file a problem report and ask them to correct it. Second get a few pics of yourself with the brown hair and still use your blonde pictures as well. Write something on your page / website about you having brown hair. Good luck , Pollie
you def need to change profile, tell about the change on your website, and put some new pics with new hair color on your site. Surprises for guys who are expecting one look and get another are generally not well received. Cover your bases so guys new to you will be aware of your changed appearance.
LLAP,
Swim
...that identifies you as a "blonde beauty," a "blonde bombshell" and a "blonde All American gal." It seems like you don't want to waste the money you recently spent on a 'top quality photographer' - okay, but you should add in big bold letters: "NOW A DARK BRUNETTE!"
Add some selfies to your site and make it obvious that you are no longer a blonde.
Questions from the newbie
From a life long lover of brunettes, I say you made the right choice! Lol
Best of luck to you!
If you take a few selfies and add them into your mix of pictures you should be fine...I would suggest not using your blonde pictures on the photo only board but completely re-doing your photos isnt necessary
I don't care what color your hair is, I hope I can meet you someday!!!
I don't really care what color a lady's hair is (ok, I have a preferred color) but I am disappointed when I research a provider, decide to see her, book a date and when we meet her hair is a totally different style and color.
Let us know when you've posted new pics! 
assuring for the guy if he expects a blonde and a blonde answers the door. Not sure what I would do if I was expecting a blonde and a red head answered the door.
Since the shoot was that recent they may not even charge you, if they do it won't be much.
They can't necessarily get it all the way to a deep brown and still look good, I'm not sure, but they can definitely and easily knock it down several shades. Those photos are good, don't waste them.
I don't know if this will come off as dishonest, but you can probably pay your photographer a little extra to change all your pictures to match your current hair color. Luckily for you it's much easier to go dark with photoshop than to lighten hair.