The gray area I'm referring to is the area that's not used, say from 12am to 6am.
I want to get rid of this area entirely (It's not the color that's the issue). I don't use that space at all, so it means I have to scroll down to schedule something every single time -- seems very counter-intuitive imho.
Edit: Simplified to one question.
Edit: Still no solution, but some workarounds are provided below. An actual solution would be best though. (Not to take anything away from those who contributed).