Hi there, I need to know what your using to draw pleat lines on white leather? I had white vinyl pencils I had been using for years and after Covid hit, they were backordered and now they are back in stock and were sent to me, but they used something different to make them and now I can't see the lines on the white leather to sew the pleats. I have tried colored chalk but it won't rub off when your done. Any help would be appreciated. Thanks