Option to choose shadowed or unshadowed editor when activating panel


Hi everybody,
I would like to know if there is option or trick to remove the shadowing of the text editor when the top panel is activated (for fuzzy finder for exemple). I noticed this depends on theme:
-using atom-dark-ui, the text is not shadowed

-using the one-dark-ui, the text is shadowed

I prefer one-dark theme but the shadow is very unconfortable when navigating between and into file with almost no visibility. Maybe I need to contact the theme provider or it can be a global option ?