Final answer:
FDNY connections to a combined standpipe/sprinkler system must be painted a specific color for identification, but the color cannot be determined from the information provided. Refer to FDNY codes or building regulations for the correct color.
Step-by-step explanation:
The FDNY connections to a combined standpipe/sprinkler system should be clearly identifiable to ensure efficient access and use by firefighters during an emergency. These connections are typically required to be painted with a specific color to indicate their purpose and distinguish them from other pipes and systems within a building.
Unfortunately, based on the information provided, which includes an image of a campfire with different colored flames resulting from burning a garden hose in a copper pipe, there is no direct correlation with the FDNY requirements or information that would answer the question accurately. It is important to refer to the FDNY codes and regulations or building codes for the specific color designated for these connections.