typedef enum colours_t
{
	black,
	blue,
	green,
	cyan,
	red,
	white
};

//or

typedef enum colours_t
{
	black,
	blue,
	green,
	cyan,
	red,
	white
} my_colours;

//or

typedef enum
{
	black,
	blue,
	green,
	cyan,
	red,
	white
} my_colours;

//or

enum
{
	black,
	blue,
	green,
	cyan,
	red,
	white
};