The countertops and beige carpet are tough with the grey tones I like but want to brighten and modernize the office a bit:) thanks in advance!

I wouldn't worry too much at this point. I don't think anything looks that bad. I wouldn't worry about your floors either--light wood floors like yours literally go with everything. After everything is installed and the kitchen is done and decorated I don't think colors will be bothering you. Your backsplash looks off-white right? I would just be sure to take a look at it in your kitchen before it gets installed to make sure you like how it looks. And the paint color you chose is a creamy off-white with a touch of grey and in the photos it looks really good. At the end of the day if you think the paint color isn't working you can always change it easily, but I'd finish the kitchen first.

I would think about making the room more stylish with minor decor changes, but make them bold. I would get a new guest chair, a new desk lamp, put a big piece of art over the file cabinets. Consider layering a bold graphic area rug under the desk. Are the shelves in the book case adjustable or removable? I would take out some of the them so you could add some big art or objects. Right now the room lacks curves and swirts, so I’m thinking a modern-ish curvy swivel chair for the guest chair, a dynamic rug under the desk (even a zebra hide!), an archng or round modern desk lamp. Rather than try to jazz up the interior or back of the bookcases, I would break up the appearance of the shelves with a couple of framed oversized black and white photos hung over a few of the shelves or propped up within them, or absract modern artworks with color. Also consider, if it’s not impractical, arrangng some of your books horizontally, instead of all of the spines vertically upright

palest of blue will work and complement and not interfere with other things you bring into the space. nice cabinet colors shown in a kitchen but I'd go even a bit lighter for wall paint....like the walls in the last two pics. very nice....