Paint is your friend. I like what we can see of the artwork. And the window coverings look to be a warmish grey. I’d start with repainting either a warm white or a milky coffee colour from the artwork. For the bathroom I’d use a white paint and add towels in a colour that makes you happy. The only colour is your artwork so a bit more variety in your soft furnishings would be a low cost way to add warmth.

I think you have a wonderful neutral base to work from. I wouldn't bother to repaint but add colour in cushions, throws, towels, decorative objects, rug under dining table....and larger plants. If you aren't good at keeping plants alive there are some really good faux options these days that look realistic. I was watching a You Tube video recently by an interior designer and she was showing before and after shots of rooms similar to yours where the only difference with the after was plants/greenery/flowers added - and what a difference it made!

I wouldn't go too overboard with bright colour - keep it classy. The tans in your artwork would work well.

Also look up Kristen McGowan on You Tube - about 3 months ago she had a video 'How to add warmth to your grey home' - some excellent ideas there.

You have great pieces to work with, for your tv room, add neutral colours in cushions and throws, adding a coffee table or nest of tables would just give that balanced look and take the square look of the furniture around the wall.

Love the artwork in your dining room, you could always hang pendants if that is the permanent position for the table, otherwise add beautiful pieces to the dining table.

For the bedrooms just add beautiful bedding to elevate the rooms.

Add a bit of styling to your kitchen bench top, you could add shelving, a cupboard above fridge as suggested would be great, but you could always get a beautiful bowl with a faux plant( there are some great ones available now) just to distract the eye from the space and it could look gorgeous. But really you don’t need much .

Pick a favourite colour towel, you can hang them or put on a rack, a couple of floating shelves will add interest and a gorgeous vase on your bench.. beautiful.

Hello Marisa, I love the look of your home. I doesn't look cold to me but comfy and inviting. I guess you can easily add some more colour with throws and rugs, cushions and bits and books. Maybe a feature wall in a colour here and there or even wall paper might work too. Let us see what you do when you have and I am sure you will feel happier when you add somit to it. Cheers Margot PS I often suggest large prints of your favorite place on earth:London, Paris or Florence then pick up some of those colours to add to the room too. :)