Correct
Significant corrosion, leaks, cracks, or reaching the end of its expected lifespan are signs that a pipe may be too old to use. Just being made of plastic does not necessarily mean it is too old as plastic pipes can have a long lifespan. The color of the paint on the pipe has no relation to its usability. A shiny surface is not an indicator of a pipe being too old; in fact, a shiny surface may suggest it is in good condition.