The color of walls of your kitchen completely depends on the color of your cabinet, but you can opt for white color as that color is plain simple and goes with any color cabinet. But in kitchen while making food there are many things like smoke, grease or staging of oil or masala can make the color of wall look dull and bad and it gets more dull after every cleaning, whereas by applying wallpapers, your kitchen will look much more younger than paint and wallpapers can also survive almost 10 years if maintained properly. A few wallpaper Ideas that i can suggest for your kitchen are:- Modern wallpaper - Modern wallpaper designs are not constrained by any particular patterns or fashions. A wallpaper pattern featuring exotic fruit or animals is just as likely to have a quirky lobster theme as it is. Other possibilities include 3D geometry, abstract florals, and odd ornamentation. The wallpaper will have more effect with modern furniture. Retro and vintage- When the kitchen walls are decorated with antique and retro patterns, a certain whimsy and nostalgia are added to the space, creating a really particular feeling. Flower Power themes, arty or modern designs from the 1950s, 1960s, and 1970s, and large geometric patterns are characteristic for this. Brick and stone patterns- Materials used in country/historical kitchens over the years that are indestructible but also incredibly cosy haven't lost any of their attractiveness and function flawlessly in 21st-century kitchens. Stone appearance wallpaper styles, such as brick, sandstone, clinker, or even concrete, emanate a feeling of solidity and sturdiness while yet having the potential to seem completely modern when paired with the appropriate furnishings. Marble- Superior marble is the epitome of subtle elegance. The best option to realise gorgeous and glitzy kitchen decor ideas is with deceptively genuine, costly imitation marble wallpaper models. Marvelous effects are produced for walls by contemporary, inventive marble forms and colours. Tile Design- Numerous kitchen design ideas are derived from instances in nearby and distant other nations. These are only a few instances of the vast possibility offered by tile imitation wallpaper. Other possibilities include artistic Spanish Majolica-style tiles, oriental decoration tiles, Delft tiles from Holland, and Roman frescoes.

Are you saying you will be layering a wooden false wall on top of the existing wall to hold the pocket door? If that is the case, you might want to treat the entire side of that new and existing wall ( including the area above doorway) as an accent wall using wood veneer strips. They look like actual pieces of wood plank which have adhesive backing, they come in a variety of finishes and colors...I like the old reclaimed wood look. A diagonal pattern would add extra visual interest, but would be more intense to cut and install. That will camouflage the additional layer and create a beautiful accent wall.

Teal is a very trendy colour, but having it on all four walls may be an overkill in the kitchen, especially with that dramatic chevron dado tile. I hope at least the 4th wall is white! The cabinets have to be white too

Grey is trending big time now. And don't worry about it being too dark. You can offset that with a white counter top, white dado and steel accessories and of course interesting lights