Most wood flooring materials are subject to changes in color from UV exposure, even when such exposure is indirect. Many prefinished wood flooring materials have UV protection.

The good news is that color change can be minimal in hallways and doorways.

Will you be able to exactly match the color/grain? Probably not, even with the same product if one has years of wear. However, the best place to make a transition from one design/color to another is in a doorway, especially if that door is closed most of the time.

There are so many products available now, the difficulty is finding the time to see as many as possible.

Matching oak is not the problem. If it is solid hardwood, this can be done relatively easily. Matching MANUFACTURED or FACTORY FINISHED oak is a BIG problem.

First off, you need to find out if your oak is "factory finished" or site finished. Site finished is pretty easy to deal with. Matching the species (red, white or European) the plank and the cut is something that a WELL versed hardwood flooring specialty store can do (look for a Ma-Pa operation that have been in business for 25+ years who deal with hardwoods as long term business model).

Once you have the ability to match the oak, you can go ahead and install the MATCH in the bedrooms. You can then decide what needs to be done. A full sand and refinish of EVERYTHING (all existing hardwoods + bedrooms) is ideal...but not necessary.

If the existing flooring is in good shape and the finish is looking to go another 10-15 years without any problem, then you can have the NEW oak finished in a complimentary colour and leave everything else as-is. It isn't ideal, but it has worked in the past as a middle of the road compromise.

When your old hardwood needs refinishing, you can go ahead and have EVERYTHING refinished so that you can a stain/colour match at that time. That's when everything becomes continuous and the desired high-end look comes home to roost.

You can try and match your hardwood. Won't be easy as I've learned companies tend to discontinue products every several years or so..they do something similar then, and give it a different name, but most of the time it's not the perfect match.

I was able though to find a very very similar (engineered) wood-made by a different company, and after spending a couple of weeks of circling all the flooring stores I could get to.

So, I'd look into that possibility first.

If you absolutely cannot find a close match-you can use the fact the bedrooms are enclosed spaces, and do a similar floor, maybe laying it differently, on a diagonal, to make the transition look more intentional. No idea whether it's hard to do from technical standpoint-but more expensive for sure.

Another idea-to use a tile in the entrance to each bedroom, as a transition, and then to proceed with a slightly different hardwood. But that's not easy, and highly depends on the style of a house. Might look fabulous. Might look silly. You know your home, so you'll know whether it's something to be considered.

And yet another option-a totally different material altogether. New carpet. Tiles(if it makes sense in your climate at all). Vinyl or Linoleum. Etc.

Amazing answers from previous posters. So helpful when pros weigh in.

I didn't even think of this possibility, since I was looking for the same floor, but for using it in a different house:)