Take it to a vet just to be carfull
Take your budgie to see an animal doctor (a vet) for treatment immediately.
any colour
No, the original coloured Budgies were green. Blue was introduced by selective breeding and mutations in the genetics. Just google image Wild Budgies.
If, by "parakeet", you mean any of the smallish parrots with long tails, such as budgies or cockatiels, then no, it most certainly does not have to be the same colour.
Most certainly. Although the natural colour of budgies in their native Australian habitat is green, breeding through the years has produced a huge range of colours, including white. Unless the budgie is a true albino, the white is usually broken by black markings on the wings and/or back. The white may also be blended with other colours, such as green, blue, purple and yellow.
His hair was originally brownn but is now turning grey
because it is DRYING!
Budgies vary tremendously, and it is one of the reasons why breeding budgies is so entertaining. The resulting babies could be green, grey, pied green-grey or something quite different, like a blue, depending on the recessive genes.
matt lablancs hair colour was brown but is now turning grey
Yellow -turning pink in the presence of mustard gas.
camoflage (it changes colour like some other cephalopods( octopuses and squids)) and its bone ( although budgies and giant african land snails normally eat shop bought cuttlefish bones.)
Just Take a sample of the colour you are wanting.. If your really worried, your colourist will sit down and talk you through all your options! Xxx