What you have in your pics is a factory finished floor. It is difficult to get that kind of consistent look when staining unfinished, especially if the unfinished has boards with mixed sawing characteristics. The face sawn material will take up and hold the least pigment and will be the yellow boards you are seeing. We can sometimes get a more even look by using a sand grit sequence to allow more pigment to be deposited on the floor and by doing what we call waterpopping; you may still get variations, but it will look as even as it's going to get. I don't do this...but some of my colleagues will first use an analine dye and then, when it is dry, will follow that up with a pigmented stain. Talk with your finisher.

It takes a rather involved recipe of different stains to get pine to look good to start---much less look like/comparable to oak. I have done a fair amount of trim on my remodeling jobs and have yet to get a good comparable color for pine to match any other wood. The reasons are due to the color, grain texture, wood density, and wood absorbtion rates of white pine. Pine is famous for staining with blotches and light/dark areas. One way to minimize that tendency to blotch is to apply a pre conditioner---but I have had terrible results with off the shelf conditioners. I much prefer a one pound cut mixture of white(Blond) shellac as a preconditioner. That is one pound of white shellac flakes disolved in one gallon of denatured alcohol---and then set until the wax settles out---which can take a week. So, staining and finishing pine is difficult to do and trying to match/get compatable colors adds to that. Seems to me a faux finishing technique might be a better idea.

I did not use it on my floor, but I did use it on my front door, which may or may not help:My floor is oak, and we have not changed the finish. The door is mahogany instead of oak, and so it may take the stain differently. I could show you a photo of the exterior of the door, but it is a slightly different color because we put a different stain on that side first and then tried to remove it because it was too red, and while we did remove most of the stain, there was a slight residue that makes it slightly different from the interior side. No one has really noticed until I tell them, however.

@jjam Your floors look beautiful. @Angela Wacker I hope your floors turn out beautiful. @mdln these are such a good ideas/solutions next time I am doing a renovation I will make sure to get this kit. I went by the house in the morning and took a closeup photo (prior to getting confirmation from the contractor and subcontractor) It does look like white oak. @SJ McCarthy thank you for all the information, it gave me ideas on what to ask the contractor and how to have a conversation about the floors. I even came up with a few more stains to try in case the original choices did not work out. The contractor e-mailed me early this afternoon agreeing to test a few more colors. We asked him, again, regarding the type of floors we have and the new ones they installed, initially he said the floors were red oak, but then he texted us an hour later letting us know that the sub had informed him that it was white oak!?! What!! @Beth Thank you!!!! @SashaDog Thank you!!!! @G & S Floor Service @Timothy Winzell it appears you guys were right - it is white oak -probably. Quality/grade? who knows! I cant believe the contractor did not know this! It appears my worries about the floors looking red after a light stain were unnecessary. We stopped by the home to see the samples on our "white oak" and the white stain looked nice with the top coat on it, not pink. The birch was nice, but we decided to go with the white as it looks more like the natural color of the wood we love. I am still anxious about the overall outcome, but crossing fingers that it turns out nice. I am going by the house tomorrow and working from my car so I can take a look and stop the workers in their tracks if it looks bad lol. I am just kidding...but maybe I am not :) Here are the two samples we tried Bona Birch and Duraseal White with bona HD on our "white oak" floors (this is not 100% for sure lol). Leaving the picture here in case someone is looking for a picture of these two stains. You are all such a wonderful group of people! Thank you for helping me through my anxiety. This morning I felt so stupid to have been worrying about a floor stain when so much more important things are going on in the world. Anyways, thank you and much love to you all. Stay healthy!! -Mari