If budget will stretch you could look at coloured glass. Most glaziers can put any colour on the back for you and template the area with sockets included then fit it all relatively quickly. Having a solid colour could help things look less fussy between the pattern of the wood grain and speckle of the worktop plus it really helps expand the space (as you look through it) and bounce the light around to brighten the space slightly.

Hello Karen, I love your Kitchen, lovely cabinets! This Kitchen features Traditional Style (from what I see). I personally like the glass panel splash back but this wouldn't go with your cabinets. However tiles, such as metro tiles, mosaic or patterned tiles would perfectly suit the style you have. I chose these images as an inspiration for you. The very last one is featuring glass panel splash back. Just to give you an insight cause they all look amazing. Good Luck with your Project! StJames Design Interiors

Copper and graphite work well together. Perhaps look at something along the lines of Calacatta Marble. Here’s a small kitchen we did. Graphite on the bottom with copper handles and Dove Grey on the top, Calacatta Marble worktops

We didn’t have one put behind our sink but we have a boiling water tap and it splutters all the time and I’m forever cleaning the wall. The paint is supposed to be for kitchens but it can only endure so many washes! We will eventually put one on - perhaps a 12” glass one so the dark paint on the walls will show through. You could consider tiling a couple of rows or get solid colours ie pure white if your sink wall is only ever going to be white.