I'm anxious to see your bike Catrin... sounds incredible! Many years ago, I had a custom titanium bike built and like you, thought of trying to give it some color. Over the years, I've changed handlebar tape, tires, water bottle cages and the top cap for my headset. Two years ago, I even built a wheelset in orange...

Regardless of what you decide to do, make it yours and "keep it fresh". Can't wait to see some pics