Classic theme appearance of RStudio IDE

Hi RStudio team!

Recently I updated RStudio after some time, and found out that "classic" theme for appearance of panels disappeared. I was using this theme for years as I prefer to have my code and console on the left in dark style, but my environment panel and help/plots panels in light background. With recent version of RStudio this seems impossible to achieve as whole appearance changes into either light or dark depending on chosen editor theme. Could you put "classic" theme back? Or is there any other way to achieve what I described with current settings? Thank you very much!