[Nicolous]

This method does not make possible to place other colors than the colour of the team in the message.
I found an other method which make possible to place multi-colours in the message :

// void sayMsg(char * mess, int playerIndex = 0);
void sayMsg(char * mess, int playerIndex)
{
	MRecipientFilter filter; 
	filter.AddAllPlayers();
	bf_write * pBitBuf = engine->UserMessageBegin( &filter, SAYTEXT ); // SAYTEXT == 3
	pBitBuf->WriteByte(playerIndex); // playerIndex is the index of the player whose name is quoted in the message
	pBitBuf->WriteString(mess);
	pBitBuf->WriteByte(1);  // or 0, I don't know the difference
	engine->MessageEnd();
}

Example :

char buf[64];
Q_snprintf(buf,sizeof(buf),"\004Player \003%s\001 is dead\n",player->GetName());
sayMsg(buf,engine->IndexOfEdict(pEntity));

can display :

Player Nicolous is dead

if Nicolous is CT
When "indexPlayer" is 0, the text is lightgreen.

If I use this function :

void sayMsg(const char * mess) // No index provided
{
	MRecipientFilter filter; 
	filter.AddAllPlayers();
	bf_write * pBitBuf = engine->UserMessageBegin( &filter, MESSAGE_SAYTEXT );
	// pBitBuf->WriteByte(index); // NO index provided
	pBitBuf->WriteByte(0x02);
	pBitBuf->WriteString(buf);
	pBitBuf->WriteByte(0x01);
	pBitBuf->WriteByte(1);
	engine->MessageEnd();
}

when I write

sayMsg("This text is \003red or blue\001\n");

the text "red or blue" is randomly red or blue. However "red or blue” is not the name of a player