colour centre may refer to:

• colour centre, a region in the brain
• chromophores
• Nitrogen-vacancy_center in diamond
• Silicon-vacancy center in diamond

• John Fletcher (South Australian politician)
• John Fletcher Stout Conlin
• John Flett
• John Flett (disambiguation)
• John Flett (fashion designer)
• John F. Link, Sr.
• John F. Link Sr
• John F. Link Sr.
• John F. Link, Sr
• John Flint (footballer)
• John Flint South
• John Flocke
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• John Flood (footballer born 1932)
• John Flood (footballer, born 1932)
• John Flood (footballer born 1960)
• John Flood (footballer, born 1960)
• John Flook
• John Floore
• John Florea
• John & Florence McKeage House
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