Hi MiaW,
Based on your description, I understand that you want to change the color scheme in my site. Unfortunately, it is not feasible to achieve it at present.
In this case, I sincerely suggest you submit feedback to our operation team so that they can look into this feature. Many features have been improved via customers’ feedback because we always want to give users a better experience. We value your cool idea and precious time. Your efforts will also be highly appreciated.
Best regards,
Dunk Shen