How to change the background color of a Treeview

I'm here to ask you how to change background of a treeview, I tried that ``` ttk.Style().configure("Treeview", background="#383838") ``` It's work perfectly just for the cell, but the rest of the Treeview stay white. I tried to change the background of the window, the frame too, but it does not work. So, how to do that, i'm sure that you know. Bye and thanks in advance :) The code ``` from tkinter import * from tkinter import ttk p=Tk() separator = PanedWindow(p,bd=0,bg="#202322",sashwidth=2) separator.pack(fill=BOTH, expand=1) _frame = Frame(p,bg="#383838") t=ttk.Treeview(_frame) t["columns"]=("first","second") t.column("first",anchor="center" ) t.column("second") t.heading("first",text="first column") t.heading("second",text="second column") t.insert("",0,"dir1",text="directory 1") t.insert("dir1","end","dir 1",text="file 1 1",values=("file 1 A","file 1 B")) id=t.insert("","end","dir2",text="directory 2") t.insert("dir2","end",text="dir 2",values=("file 2 A","file 2 B")) t.insert(id,"end",text="dir 3",values=("val 1 ","val 2")) t.insert("",0,text="first line",values=("first line 1","first line 2")) t.tag_configure("ttk",foreground="black") ysb = ttk.Scrollbar(orient=VERTICAL, command= t.yview) xsb = ttk.Scrollbar(orient=HORIZONTAL, command= t.xview) t['yscroll'] = ysb.set t['xscroll'] = xsb.set ttk.Style().configure("Treeview", background="#383838",foreground="white") p.configure(background='black') t.grid(in_=_frame, row=0, column=0, sticky=NSEW) ysb.grid(in_=_frame, row=0, column=1, sticky=NS) xsb.grid(in_=_frame, row=1, column=0, sticky=EW) _frame.rowconfigure(0, weight=1) _frame.columnconfigure(0, weight=1) separator.add(_frame) w = Text(separator) separator.add(w) p.mainloop() ```