You can use what basically looks like contact paper (i.e. the stuff used to cover books in primary school) to make clear glass windows look frosted. Something like this from Bunnings: http://www.bunnings.com.au/handi-home-900mm-2m-plain-frosted-decorative-window-film_p3960052 However, you may want to talk to your builder first as they may be able to replace the glass in the front door for a decent price.

I don't think you can go wrong with a large timber door. The colour should contrast with the granite nicely and will even help soften all the colder surfaces. Have you seen any doors you like? https://www.houzz.com.au/products/front-doors-prbr0-br~t_10816

Yes. Axolotl are amazing! I have sourced a company in Melbourne who pretty much do the same thing. It's Metalcote in Cheltenham. The bronze/graphite sample I have attached to this post is from there. It's liquid metal. Axolotl are in Sydney and the cost of transporting door to and from there, plus cost of coating, is way expensive. Coating alone, minus cost of door, is around $2500+/- I figure for the same product I won't have to pay for return delivery of a heavy door

Hi Wren, what a lovely setting! I would be inclined to match the door colour in with the exterior wall colour. Include the casing, threshold and trims as well and this way you will end up with the timber, black and your main paint colour to give a better sense of balance. Good luck! Regards, Kathryn.