Hello, I just had 1200 square feet of brazilian walnut installed in my home. The floor has the variation in brown colors I was expecting but I noticed a reddish hue to the floor. Is that possible with brazilian walnut? Just wanted to make sure I have the right flooring. I will try to post pictures soon.

Yes, there will be red toned (as well as green) boards within Ipe (Brazillian Walnut)

Ipe or braz walnut will have a ton of color variation including reds, greens and browns. Most sample boards are not large enough to get a real idea what to expect.