Hi. The basic colors of smoke in the exhaust to diagnose are three, white, black and blue. If another variation is observed there may be another condition that is not easy to diagnose for us at a distance. It is logical that with the kilometers that it possesses there are certain wearings that do not necessarily require repair, especially in the 1.9 Peugeot engine that is extremely noble and reliable and has a long life. I would say that it is not a condition to worry, as long as there is no consumption of oil, coolant and the temperature stays normal. Observe at the time of presenting the condition of the idling smoke if a particular smell is perceived. If I would tell you that if you have not made oil change and especially replacement of the distribution band do not delay it, unless you have the corresponding invoice and date. Salu2.