There are numerous factors that may influence colouration during glass production.
Over time such colouration often becomes very faded.
Body colouration is highly variable and diverse.
A young bird is distinguished by a uniformly dark gray colouration .
Many species will adopt subdued or otherwise abnormal colouration .
The colouration includes a reddish and light banded tail.
These differences are further corroborated by morphology and colouration .
In practice, red colouration became a unit identification.
Fish have sophisticated ways of using colouration .
Individuals are distinguishable by colouration and head shape.
This is referred to as structural colouration .
The bright colouration also makes the males more susceptible to predation.
The black and white colouration is noticeable from an early stage.
A colouration known as “Dudley” is also possible.
A recessive gene causes the black colouration in these animals .
Males and females are similar in size and colouration .
As the goldfish age their colouration can change considerably.
Multiple colouration is common requiring multiple tying and retying.
There has been some confusion over its colouration .