Advice Needed on final internal selections and colours

Hi all - We are about to finalise all our internal selections with our builder next week and would really love everyone's thoughts, opintions, comments on the below selections we have to date. We are very keen to see if people feel that the selections below will work/coordinate overall. We are wanting a more modern look and feel overall so please let us know what you think. I am also attaching below a picture of our future home.

Internal Colours
Internal walls throughout the house (Exc Home Theatre) - Burnt Ash (Bristol P226-N2)
Walls in Home Theatre - Silhouette (Bristol P223-N6). Wanted a more dramatic effect here
Ceilings/Cornice - Whisper White (Taubmans 90YY83/036)
Skirting & Window Frames - Whisper White (Taubmans 90YY83/036)
Wall Alcoves (feature) in Master Bed, Foyer Entry & Rumpus - Silhouette (Bristol P223-N6)

Question - Do you think Silhouette colour in alcoves on wall will give good contrast and impact as a feature against Burnt Ash. If not, what other colour could be an option for the Alcoves?

Flooring to Ground Floor
Ground floor (with the exception of Lounge, Study, Theatre) will be Polished Porcelin - a very light grey/white look
Timber flooring (Jarah) will be used in Lounge/Study/Theatre

Kitchen

Kitchen Cupboards/Doors - Shannon Oak Sheen (Polytech)
Kitchen Overhead Cupboard Doors - Aluminium frame/Staphire white flat glass with Whisper White end panels
Kitchen Tall Cupboards around appliances and fridge - Polyurethane Gloss/Dulux Whisper White
Kitchen Benchtop - Caesarstone - Snow
Kickboard material - Brushed Aluminium (Polytech)
Kitchen Splashback - Zoom Red (DecoGlaze)

Bathroom/Ensuite
Bathroom/Ensuite Vanities - Shannon Oak Sheen (Polytech)
Benchtops - Caesarstone - Snow
Tiling (Floor and Walls 300 x 600) - Polished Porcelin - same as downstairs
Feature Tiling (in between mirrors and shower walls only) - dark charcoal striking lines throughout it with a hint of glitz in it

I very much appreciate everyone's thoughts/comments/opinions on the above and if you think it works or alternatives I may want to consider?

Thanks

Chris