How to distinguish native hair regrowth from transplanted hairs?

After an FUE hair transplant, is it always – or almost always - possible tell the difference between native hairs and transplanted hairs – specifically when the transplanted hairs FIRST start growing? In other words, when transplanted hair starts growing for the first time (after initial shed), does it always have a strange appearance – such as being more light in color, or more weak, wispy and curly? Or does it sometimes start growing and look thick and mature – just like healthy native hairs?