A red apple is every colour but red, this is because white light is a combination of every colour so when white light goes into an object it absorbs every colour but red which it rejects making it every colour but red. Neil Degrasse Tyson ( an astrophysicist ) covers this and probably explains this better on his YouTube series Startalk.
The most common color for dogs is black.
most common skittle color is purple.
In 2010 it again white. red is the most common color
the most common eye color is brown Brown.
Brown is the most common color.
Red is the most common color for sharps containers.
The most common color of warning signs is yellow.
the symbol of an apple, well it has many but the most common one is love.
The most common color in the rain forest will be green.
most common color of grapes are purple
The most common color of the flower Lily of The Valley is a pinkish-white.
The are a vast majority of trees in Taiga but the most common one is the apple tree.