Or the fact the markings are yellow on taxiways, white on runways.
In 2001 we had a Cessna 402 land on Twy Alfa abeam Intl-3....on his second approach. He was already aligned with Alfa on the first approach, and came back and landed on it on his second attempt. It was a smooth landing, with 3 nice long skid marks showing his point of touchdown.
The report from that incident can be seen here
https://www.atsb.gov.au/publications...200102619.aspx