We just painted a color called "Latte" over the dark red walls in our place and we keep thinking that someone left the light on! It adds that much light to the place as the red was just sucking out any light in the place. Find a color you like more for that wall and repaint...and/or maybe add a ceramic tile backsplash? It will make it feel brighter in there immediately as you will get a lot of light reflection. I love the idea of sage green with your cabinets.

I really like the clean lines of your kitchen , it's beautiful and I would not add to much colour but you could use some accessories with green and white that would compliment this minimalistic kitchen. For example adding a bright green plant/s or an accessory the same colour as the clock on your top wall can put everything in a nice perspective!

Paint the wood floor with a flooring paint. If you want to be creative, you can create your own special design. I've had painted wood floors in a previous home and everyone loved them. If you get tired of it, paint them a different color! Saves doing rip out and better for the environment! My floors held up well. I was surprised. I even did a faux marble floor for fun.

Hello trifides, What about chrome? Good at reflecting light.. A dual fuel Smeg range for example... A Dualit chrome toaster.. Architect kettle also Dualit.. Shiny elements will really pick up the light.. With the cabinets and the flooring, consider textures and warm elements to boost the look.. I think chrome is a good addition.. as both red and orange might clash with the flooring and cabinets in the colour and finish you have.. Think of other textures and materials you can introduce ...Chopping boards are lovely stacked and marble is another lovely material to use.. Pestle and mortar and a cheese board (I use mine for toast etc.... (Anthropologie and Habitat.. Maybe you want a cream Smeg retro style fridge.... You could then have some cream tiles or a creamy coloured granite for a splash back.. Then maybe a cream Aga... If you were replacing the worktop.. I'd suggest having an upstand as I love this sleek finish.. You can add the same material behind the oven to compliment.. Keep the worktop as clear as possible and a potted rosemary or two could be lovely... Of course the other thing I could suggest is painting the cabinets should you want to consider that as an option for you.. : ))