The photo below is my suggestion for colour of floor. Furniture should be darker - similar to below. For the rug - choose one colour from the artwork and find a similar coloured rug. Don't put a mantle over the fireplace - it could be a health hazard - bumps and bruises. Blinds - unless you want them to make a statement I think white - to match window frames would be fine.

Silk would be interesting, not to mention elegant. As for paints, the Silver Illusion appeals, but it might throw green (not sure). I also agree the Tranquil Retreat is a good one. I'm wondering how big the feature wall is, and what is going on this wall, eg TV, fireplace, large artwork, etc.?

That copper cabinetry getting all fingerprinty and dirty... Really brings the industrialism to life.

Hi Catherine, to help others make suggestions that will be suitable, would you be able to post a drawing of your room please - wall sizes & where the windows/doors are positioned? That way your space can be personalized for you. I think feature walls can look really good in certain spaces... but I think if you like it, do it :) it can easily be repainted over, especially if you have concerns down the track of resale... do what you love & what makes you happy- it will make your office space a happy place that you’ll want to be in & will bring out the best in you & your work :) I’ll be personally interested in responses about a good chair to save your back too... have you found any ergonomic chairs you like? I think your chair purchase will need to be done in store vs online so you can sit on a few & make sure they are a good fit for you & your spine, especially as you’ll be sitting in it for extended periods. As for gadget recommendations, I’m as untech savvy as they come lol - again I’ll be following with interest :)