if (_force_effect_colour->GetValue ()) {
wxColour const ec = _effect_colour->GetColour ();
_content->subtitle->set_effect_colour (dcp::Colour (ec.Red(), ec.Green(), ec.Blue()));
if (_force_effect_colour->GetValue ()) {
wxColour const ec = _effect_colour->GetColour ();
_content->subtitle->set_effect_colour (dcp::Colour (ec.Red(), ec.Green(), ec.Blue()));