В начало:
Код:

new playerColors[100] = {
0xFF8C13FF,0xC715FFFF,0x20B2AAFF,0xDC143CFF,0x6495EDFF,0xf0e68cFF,0x778899FF,0xFF1493FF,0xF4A460FF,0xEE82EEFF,0xFFD720FF,
0x8b4513FF,0x4  949A0FF,0x148b8bFF,0x14ff7fFF,0x556b2fFF,0x0FD9FAFF,0x10DC29FF,0x534081FF,0x0495CDFF,0xEF6CE8FF,0xBD34DAFF,
0x247C1BFF,0x0C8E5DFF,0x635B03F  F,0xCB7ED3FF,0x65ADEBFF,0x5C1ACCFF,0xF2F853FF,0x11F891FF,0x7B39AAFF,0x53EB10FF,0x54137DFF,
0x275222FF,0xF09F5BFF,0x3D0A4FFF,0x22F767FF,0xD6  3034FF,0x9A6980FF,0xDFB935FF,0x3793FAFF,0x90239DFF,0xE9AB2FFF,0xAF2FF3FF,
0x057F94FF,0xB98519FF,0x388EEAFF,0x028151FF,0xA55043FF,0x0DE018FF  ,0x93AB1CFF,0x95BAF0FF,0x369976FF,0x18F71FFF,0x4B8987FF,
0x491B9EFF,0x829DC7FF,0xBCE635FF,0xCEA6DFFF,0x20D4ADFF,0x2D74FDFF,0x3C1C0DFF,0x12D  6D4FF,0x48C000FF,0x2A51E2FF,0xE3AC12FF,
0xFC42A8FF,0x2FC827FF,0x1A30BFFF,0xB740C2FF,0x42ACF5FF,0x2FD9DEFF,0xFAFB71FF,0x05D1CDFF,0xC471BDFF,  0x94436EFF,0xC1F7ECFF,
0xCE79EEFF,0xBD1EF2FF,0x93B7E4FF,0x3214AAFF,0x184D3BFF,0xAE4B99FF,0x7E49D7FF,0x4C436EFF,0xFA24CCFF,0xCE76BEFF,0xA04E  0AFF,
0x9F945CFF,0xDCDE3DFF,0x10C9C5FF,0x70524DFF,0x0BE472FF,0x8A2CD7FF,0x6152C2FF,0xCF72A9FF,0xE59338FF,0xEEDC2DFF,0xD8C762FF,
0x3FE65CFF    
};

В OnPlayerSpawn:
Код:

SetPlayerColor(playerid, playerColors[playerid]);

В OnPlayerCommandText:
Код:

if(strcmp(cmd, "/invisible", true) == 0) {
    SetPlayerColor(playerid, 0x00000000);
      SendClientMessage(playerid, COLOR_ORANGE, "Ты невидимка");
      return 1;
}

else if(strcmp(cmd, "/visible", true) == 0) {
    SetPlayerColor(playerid, playerColors[playerid]);
      SendClientMessage(playerid, COLOR_ORANGE, "Тебя видно");
      return 1;
}