I have the Grazia Rixi and what I love is the irregular lines. It is what makes this machine made tile seem like a man made tile! Mine are grouted in a color that matches the tile.
I ripped my first backsplash out the day after it was installed. What I thought was a basic white crackle tile, and lived with a sample for weeks before buying, turned greyish when installed.
You can always start over. But, I would first try to grout it and live with it for a few days. My guess is that you will get many compliments. Post a picture after it is grouted!

I used the Florida retro tiles in 3 of my upstairs bathrooms. I have used a ton of it as it is in my master bath walk in shower.
I personally love the fact that it looks handmade. I think the waviness will subside a bit once you grout, but only if you use a grout that is very close in color to the tile.
My tiles are white. I will post a link.

Here is a link that might be useful:

Michellemarie, I love your tiles! I think once the grout is in that it will give a softer look. When they installed your tiles, did they lay them out before hand and hand picked the pattern before putting on the wall? What grout color did you use, is that white? I'll try and see if I can closely match my tile, mine is biscuit so I may have a harder time. The grey that I picked is very light, my granite has lots of grey and I picked that color up when I chose my grout, but I may just change.

Pick the grout to match your tile.

Schnauzer,
My husband said that the the tile guy just put up the tiles as he went. As far as the grout goes, I know it was a Laticrete color, but I don't remember what one.
As I am writing this to you my husband is installing our kitchen backsplash. It is a handmade bone crackle tile. It is even more handmade looking than the Florida tile. I think you will love your tile when it is grouted. The handmade tiles have so much character. I will post a pic later tonight.

OT but michellemarie I really like your bath sconces...can you give me info on them?

med22,
I ordered the bath sconces from Lighting by Gregory. They are Crystorama sconces. I think believe they are the traditional 1 light sconces. If you go to the Lighting by Gregory website and search Crystorama sconce chrome crystal it should be the first one to pop up. I ordered the ones with the least expensive crystals and am very happy with them.

MichelleMarie, please do post a pic of the backsplash when you get a chance! I love the crackle tiles too. I am feeling somewhat better even without it being grouted, we've done a few adjustments, basically the area that really irritated my eyes and I think with the lighter grout it will look good.

Schnauzer,
The mural is up, but not the subway tiles surrounding it. I will try to post some pics tonight.

This is what I have so far. It is so far ungrouted, but I plan on using a grout to match the tiles. I think the first pic is the tile sitting on my granite and the following pics are the backsplash.
I also added pictures of another shower that has the Florida Retro tile in it. The grout color is platinum in both bathrooms.

Here is a link that might be useful:

let the grout go in first before the panic. It will look completely different :)

MichelleMarie, your backsplash looks great! Very nice job. Do you know what grout color you will go with yet?

Thanks. I believe the grout is called antique white. I bought it at the Tile Shop. It matches the tile. We haven't started grouting yet and I am trying to talk my husband into doing a sample board.
Do you like your tile any better now that it has been up for awhile?
I really love the Florida tile and everytime I take a shower I am so glad I chose it. I hope you end up feeling that way too!