### Godot version

v4.3.dev.custom_build [d76c1d0e5]

### System information

Linux

### Issue description

When opening the color picker by clicking on a color property the color changes slightly.

### Steps to reproduce

* Click on a property with value `Color(.5, .5, .5) ` in the inspector
* Click away
* Open the color picker again
* See the color change to Color(0.502, 0.502, 0.502) in the "RAW" tab

### Minimal reproduction project

[ColorChangeBug.zip](https://github.com/godotengine/godot/files/13545089/ColorChangeBug.zip)

return edit_alpha;
}
ColorPicker *ColorPickerButton::get_picker() {
	_update_picker();
	return picker;
}
PopupPanel *ColorPickerButton::get_popup() {
	_update_picker();
	return popup;
}
void ColorPickerButton::_update_picker() {
	if (!picker) {
		popup = memnew(PopupPanel);
		popup->set_wrap_controls(true);
		picker = memnew(ColorPicker);
		picker->set_anchors_and_offsets_preset(PRESET_FULL_RECT);
		popup->add_child(picker);
		add_child(popup, false, INTERNAL_MODE_FRONT);
		picker->connect("color_changed", callable_mp(this, &ColorPickerButton::_color_changed));
		popup->connect("about_to_popup", callable_mp(this, &ColorPickerButton::_about_to_popup));
		popup->connect("popup_hide", callable_mp(this, &ColorPickerButton::_modal_closed));
		picker->connect("minimum_size_changed", callable_mp((Window *)popup, &Window::reset_size));
		picker->set_pick_color(color);
		picker->set_edit_alpha(edit_alpha);
		picker->set_display_old_color(true);
		emit_signal(SNAME("picker_created"));
	}
}
void ColorPickerButton::_bind_methods() {