I need a designer

Detatched Dormer bungalow being extended. Need help with exterior colour palate. Existing front door to stay. Keen on k render to gable and garage conversion. Want to choose cladding for front veranda. Open to Cedral, wood, composite or other. Looking for a wow factor. All windows will be changed to anthracite aluminium frames. Openings on the right hand side (as you look at the property) will be enlarged and merged. There will be a new dormer above the garage and a new bedroom in the converted garage.