Buttons markup in title-bars
The Cancel/Return etc. buttons shown in the title bars of the miscellaneous eVFR windows are currently all "grey in grey". If multiple, staggered windows are open, it is a bit tedious to find the button of the active windows quickly.
The buttons of the active (i.e. topmost) window should IMHO be slightly colorised, e.g. with the symbol being red or the button-background having a discreet background. Yes, the topmost window is of course easy to find, but in flight with the sun shining on the display, colors would really simplify to find the correct button-location immediately.
When another window pops up, the undelying (i.e. inactive) window-buttons should grey out. Only the active window should have colored buttons, or even have a colored title-bar.