private void ApplyDarkTheme()
{
this.BackColor = DarkTheme.BackgroundColour();
DarkTheme.GroupBoxes(grbOptions);
DarkTheme.Labels(lblEntropy);
DarkTheme.Labels(lblPassword);
DarkTheme.Labels(lblLength);
DarkTheme.TextBoxes(txtGeneratedPassword);
DarkTheme.Buttons(btnRegeneratePassword);
DarkTheme.Buttons(btnCopyPassword);
DarkTheme.ComboBoxes(cmbGenerateType);
DarkTheme.NumericUpDown(nudLength);
DarkTheme.CheckBoxes(chkLowercase);
DarkTheme.CheckBoxes(chkUppercase);
DarkTheme.CheckBoxes(chkNumbers);
DarkTheme.CheckBoxes(chkSymbols);
}