A white buoy with an orange marking most likely indicates that you should proceed through the area with caution. The buoy often marks rapids, rocks, or sandbars.
Black,Grey,White and others might be orange
It's my understanding that the color of the markings on a black widow are by and large red, but can appear in yellow, orange, and white. I would regard that spider as a black widow for safety's sake.
Tigers are orange-furred with lighter (white) areas and black stripes. Albinos (white tigers) are white with black stripes.
The insect described sounds like a baldfaced hornet. They make a paper hive and have black and white markings.
a horse marked with black and white coat is known as a PieBald
White buoy's with orange markings and black lettering are a regulatory marker for boaters.
morring buey
white with orange markings and black lettering
re
An orange crossed diamond and black lettering indicates an area where vessels are prohibited and only swimming is allowed.
Controlled area
Keep out
a yellow, white, or orange background
a yellow, white, or orange background
Keep out
d
The orange-square buoys give information or directions.