I'm surprised your low iron splash back changed the colour so much, is it starfire? There are green and clear glass, but the thickness varies white the most. Trying to match your whites perfectly will always result in a slight variation, because the products different it's almost impossible. Very subtle tonal differences can be disguised if your splash back is enclosed or surrounded by joinery as the shadowing created allows for discrepancy. Otherwise, make colour difference intentional and find something that can coordinate and not copy the colour. Maybe mirror and remove colour from the equation

We've also used the Polytec Ravine in Sepia Oak in our kitchen and in our bathrooms. I prefer the grain running horizontal, to be honest it wasn't as much as I thought it would be, maybe ask your builder what the difference in price would be? I'm so glad I paid the extra because I think it would have bugged me in the long run. If this is your forever home, I would try and budget for this and if money is tight, cut cost in another area that you can replace in the future when money allows. Good luck!

what happened to the old column? i think you need to add a corner cabinet (900 on the stove wall and 1050 on the sink wall) with doors hinged across the corner provides 300 + 450 wide doors and better access to the corner for storage of big appliances and to allow more space for the drawers to open, the 1000 fridge space allows an air gap and two 750 wide drawers next to the 900 wide stove, i've kept the 1200 gap between benches and island and added a cabinet (opening toward the sink allows for a 600 wide 450 deep space for a bin) then two 750 wide drawers and the built in microwave making a longer island and extra drawers next to the dishwasher ...in my experience, if you're having custom made cabinets you only need to specify the size of appliances and sink, the general layout of the room and your preferred arrangements and approximate sizes and the cabinet maker should measure the site and custom make the cabinets to suit the space with minor alteration to allow for any obstacles eg like making the pantry cabinets narrower to allow for architraves around the entry door..and it's more comfortable to walk around if the pantry doesn't overlap the architrave or encroach on the doorway

my floor plan