Styling a Single Tkinter Notebook Tab

Question

I would like to change the foreground text colour of one Notebook tab to be different from the rest of the tabs as defined by the style created below. As noted I would have expected to get a red font for Tab B, but I am not sure what to style to get this one tab styled. Can someone tell me please what attribute I should change? Thank you very much.

import tkinter as tk
import tkinter.ttk as ttk

root = tk.Tk()
root.geometry('%dx%d+0+0' %(200,200))
# Style  # /68485915/
style = ttk.Style()
style.theme_use("default")

# Notebook Style
style.configure('TNotebook', background='white')
style.configure('TNotebook.Tab', background='white', foreground='black')
style.map('TNotebook.Tab',background=[("selected",'green')])
style.configure('Red.TNotebook.Tab', foreground = 'red')

# Create Notebook and Frames
Book = ttk.Notebook(root)

aFrame = ttk.Frame(Book)

# I apply the Red tab style to this frame, but the tab does not change from the style created above
# I am not sure what the relationship between the frame and the tab which is part of the notebook
bFrame = ttk.Frame(Book, style='Red.TNotebook.Tab') #/18855943/

# Pack
aFrame.pack(fill = tk.BOTH, expand = True)
bFrame.pack(fill = tk.BOTH, expand = True)
Book.pack(fill = tk.BOTH, expand = True)

# Add Tabs
Book.add(aFrame, text = 'A')
Book.add(bFrame, text = 'B')

root.mainloop()

I looked at the following questions, but none seemed to answer my problem:

There was a similar question but for the background color https://stackoverflow.com/a/72774960/6415268 — j_4321, Jul 23 '22 at 09:43

score 1 · Answer 1 · answered May 02 '23 at 02:09

I would like to change the foreground text colour of one Notebook tab to be different from the rest of the tabs as defined by the style created below

Use yummy instead of default.
Add two constant for green and red.
Add style.theme_create
Use style.theme_use("yummy")
Comment it out style.configure

Snippet modified your script:

import tkinter as tk
import tkinter.ttk as ttk

root = tk.Tk()
root.geometry('%dx%d+0+0' %(200,200))
# Style  # 68485915
style = ttk.Style()
 
COLOR_GREEN = "#26d663"
COLOR_RED = "#dd0202"

style.theme_create("yummy", parent="alt", settings={
    "TNotebook": {"configure": {"tabmargins": [2, 5, 2, 0] } },
    "TNotebook.Tab": {
    "configure": {"padding": [5, 1], "background": COLOR_GREEN},
    "map":       {"background": [("selected", COLOR_RED)],
    "expand": [("selected", [1, 1, 1, 0])] } } } )

style.theme_use("yummy")

 
# Create Notebook and Frames
Book = ttk.Notebook(root)

aFrame = ttk.Frame(Book)
Book.add(aFrame, text = 'A')
bFrame = ttk.Frame(Book) #/18855943/
Book.add(bFrame, text = 'B')
Book.pack(fill = tk.BOTH, expand = True)
  

root.mainloop()

Screenshot:

Thanks...that's useful code. I wanted to change the Tab colour of individual tabs though. — John, May 25 '23 at 22:00

Styling a Single Tkinter Notebook Tab

1 Answers1