Hi, either color options work well, I;m not a fan of the background though, it seems a little busy.
Regarding your tabs on the left, make sure the difference between the active and not active tabs are more distinct. I'm also not 100% sure which elements are interactive and which elements are not interactive. Other than the scroll bar and yellow/red buttons.
Think of yourself as a user and its your first time looking at this, then design based on no-prior preconceptions.
Regardless, it looks very nice
