How can I achieve this transparent/translucent effect?

[danyaislearning]

I want to "dim" some widgets during the loading animation.

Overlaying partially transparent images like
this red square with 50% opacity

seems to be applying to a fg_color of a parent (it is blue in this example) instead of passing through an image.

Exampe:
`import customtkinter as ctk
from PIL import Image

root = ctk.CTk()

frame = ctk.CTkFrame(root, fg_color="blue")
frame.pack()

test_image = ctk.CTkImage(Image.open("test.png"), size=(1000, 670))
image1 = ctk.CTkLabel(frame, image=test_image, text="")
image1.pack()

transparent_image = ctk.CTkImage(Image.open("redsquare.png"), size=(200, 200))
image_label = ctk.CTkLabel(frame, image=transparent_image, text="")
image_label.place(relx=0, rely=0)

root.mainloop()`

Another way would be configuring values of all widgets (all text_color, fg_color, etc) and, I guess, making the image "dimmer" with PIL. This will work, but it can't be the right aproach, it feels like there must be a better way.

[danyaislearning]

Found a solution, but it's only for windows system. Needs pywinstyles library.

pywinstyles.set_opacity(image_label, opacity)

Still would be great to find a cross-platform solution