I'm at a loss to suggest a gray that goes with Santos.

Keep the door closed. That's the only thing I can suggest with these to vastly different floors.

The new floor you are looking at has medium browns that have GREEN in them. Green and red = BIG CLASH of colours.

Perhaps photos of the TILES you are trying to compliment would help us help you with colours.

Sigh. Nope. You have a peachy-gray floor tile downstairs and a flaming red/orange/brown floor upstairs. There is really no match. The ONLY thing I can think of = ebony coloured floors. Sigh. Yep. Wood that is SOOOOOO dark it almost looks painted (match the dark grout lines). This is really the only thing that will pull these two floors "together".

And living with a SUPER DARK floor is HELL. I wouldn't recommend it.

You have a very good eye for complimenting the tile. The vinyl floor you have chosen is a beautiful match to the tiled floors. If this is your MAIN floor and the tiles are STAYING FOR 15 YEARS OR MORE, then I would suggest you IGNORE the Santos Mahogany and run the floor you want into the space.

But IF YOU PLAN on removing the tile in the next 5-7 years, I HIGHLY RECOMMEND you stop and take a breath. You will need to sit down and figure out what direction you want to the space to take when the tiles are removed. If you are doing renovations 1 step at a time, you BETTER HAVE a 7 year renovation plan IN PLACE. That plan will include COLOURS. You will want to create a story board (just like they do when making movies or TV shows) that documents what COLOURS you want things to be at the END of the 7 year plan.

Whew. This decorating stuff is not as easy as it looks!

And then the next question becomes, how long are you planning to keep the Santos Mahogany?

Ok...so you are keeping everything that exists and are simply prettifying other areas that need it. Right. So keep going with your plan. The tiles and the vinyl will look very handsome together. You will either have to ignore the colour clash where the two floors meet in the doorway or simply learn to keep the door closed. Considering you have been there for 24 years, you probably won't learn the new habit of closing the door ;-)

I say keep going with your "one level at a time" revamp. This is your forever home that has many memories. So long as you keep each level coordinated, yet separate, you should be fine. With big homes over many levels, sometimes this is all that we can do with them. Don't stress yourself. Enjoy the process.

You have the ability to coordinate quite nicely. That's not an issue. The size of the home and the 24 year time lag (no one has this gene btw) are the only things that got in the way (oh, yeah and that thing called 'Life'...it happened as well!).