I think you should visit the AD& try both the yellow gold and everose gold on your wrist rather than just thinking about it because sometimes it’s very difficult to make decision just based on our visualisation in our mind

it will help you making the decision on the size as well. usually after see them in person and try them on, you will know which one looks better on you and the one you prefer. I rarely wear yellow gold jewellery but the moment I tried on my two tone yellow gold date just my heart skipped a beat. Initially I planned to buy the 28mm but when tried it on my wrist, it looks a bit small. In the end, I ended up getting the 31mm because it’s the perfect size for my wrist.