sv_ttk incorrectly displays Checkbuttons in Tkinter

[fieryWaters]

Here is a demo sketch of the issue. Essentially the problem is that it doesn't show that it's checked when it is. To see with and without the issue comment out the "sv_ttk.set_theme("dark")" near the bottom.

import sv_ttk
import tkinter as tk

class CustomWidget(tk.Frame):
    def __init__(self, master, text, row, column, *args, **kwargs):
        super().__init__(master, *args, **kwargs)

        # Label on the left
        self.label = tk.Label(self, text=text)
        self.label.grid(row=row, column=column, padx=5)

        # Checkbox in the middle
        self.var = tk.IntVar()
        self.checkbox = tk.Checkbutton(self, variable=self.var, command=self.update_led)
        self.checkbox.grid(row=0, column=1)

        # Status LED on the right
        self.led_size = 20
        self.canvas = tk.Canvas(self, width=self.led_size, height=self.led_size)
        self.canvas.grid(row=0, column=2, padx=5)
        self.led = self.canvas.create_oval(
            self.led_size / 2 - 5, self.led_size / 2 - 5,
            self.led_size / 2 + 5, self.led_size / 2 + 5,
            fill="red"
        )

    def update_led(self):
        color = "green" if self.var.get() else "red"
        self.canvas.itemconfig(self.led, fill=color)

root = tk.Tk()
sv_ttk.set_theme("dark")

custom_widget = CustomWidget(root, "Example Text", 0,0)
custom_widget.pack()

root.mainloop()

[fieryWaters]

Note, setting the foreground color fixes the issue. sv_ttk should probably do this for checkboxes, when dark mode is enabled.

Fix:
self.checkbox = tk.Checkbutton(self, variable=self.var, command=self.update_led, fg='black')

[rdbende]

Hi!

The problem is that you're using plain Tkinter widgets, that aren't themable. Please replace them with tkinter.ttk ones, and it will work as expected.