Infinite messages.

#include <a_samp>

#define COLOR_ORANGE 0xFFA500AA

new messages[][128] = {
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me",
"Edit-Me" // The last one Should be without ',' commas.

    //You can also change the colors, can use Hex Codes,Example: {FFFFFF}
    //has a site here what i usage http://www.developingwebs.net/tools/color.php
};

new colors[] = {
COLOR_ORANGE
};

forward RandomMSG();

public OnGameModeInit()
{
    SetTimer("RandomMSG",300000,1);
    return 1;
}

public RandomMSG()
{
    new string[256];
    new random1 = random(sizeof(messages));
    new random2 = random(sizeof(colors));
    format(string, sizeof(string), "%s", messages[random1]);
    SendClientMessageToAll(colors[random2],string);
    return 1;
}