Blue

• Fiberglass casts come in blue without having to add any other pigment.Hemera Technologies/AbleStock.com/Getty Images
  
  Fiberglass casts are blue without even having to add color. The plastic of fiberglass casts come in blue, epoxy (honey-colored) or clear without having any pigment added to them. Blue fiberglass casts are usually available at the hospital or doctors office.
  
  

Black and Grey

• Black and grey casts are not popular.Brand X Pictures/Brand X Pictures/Getty Images
  
  While not very common, fiberglass ankle casts do come in black and grey. Since they aren't very popular, black and grey casts may not be available immediately. Some doctors will change the color of the cast halfway through the healing period, so request black or grey in advance.
  
  

Yellow

• Yellow casts really stand out.BananaStock/BananaStock/Getty Images
  
  Yellow is the brightest colored cast that a patient can have. The uncolored fiberglass is called epoxy, which is a honey-colored yellow. However, a bright neon yellow is available for those that want to make a statement with the color of their ankle cast. Yellow is a good choice as well if the patient wants people to sign the cast, as black marker is very visible on yellow.
  
  

White

• Plaster casts and fiberglass casts come in white.Jupiterimages/Polka Dot/Getty Images
  
  Plaster casts only come in white. Fiberglass casts can come in white as well, but the color must be requested since white is not the "normal" color for fiberglass casts.