forward WantedLevelColor(playerid);
public WantedLevelColor(playerid) {

    new wanted = GetPlayerWantedLevel(playerid);
    if(wanted == 6)
    {
        SetPlayerColor(playerid, COLOR_RED);
    }
    if(wanted == 5)
    {
        SetPlayerColor(playerid, COLOR_RED);
    }
    if(wanted == 4)
    {
        SetPlayerColor(playerid, COLOR_RED);
    }
    if(wanted == 3)
    {
        SetPlayerColor(playerid, COLOR_YELLOW);
    }
    if(wanted == 2)
    {
        SetPlayerColor(playerid, COLOR_YELLOW);
    }
    if(wanted == 1)
    {
        SetPlayerColor(playerid, COLOR_YELLOW);
    }
    if(wanted == 0)
    {
        SetPlayerToTeamColor(playerid);
    }
    return true;
}


public OnPlayerUpdate(playerid)
{
    WantedLevelColor(playerid);
        return true;
}

//Using zcmd include also.
#include <a_samp>
#include <zcmd>

#define red 0xFF0000
#define white 0xFFFFFF
#define yellow 0xCAFF70

public OnPlayerUpdate(playerid)
{
   if(GetPlayerWantedLevel(playerid)==0)
   {
   SetPlayerColor(playerid,white);
   }
   if(GetPlayerWantedLevel(playerid)>=1)
   {
   SetPlayerColor(playerid,yellow);
   }
   if(GetPlayerWantedLevel(playerid)>=4);
   {
   SetPlayerColor(playerid,red);
   }
   return 1;
}

#include <a_samp>
#define red 0xFF0000FF
#define purple 0x4B00B0FF
#define white 0xFFFFFFFF
#define yellow 0xFF0000FF

public OnFilterScriptInit() //Or OnGameModeInit() if you're using a gamemode.
{
    SetTimer("ColorCheck", 1000, true);
    return 1;
}

forward ColorCheck();
public ColorCheck()
{
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(IsPlayerConnected(i))
        {
            if(medicteam[i] == 1)
            {
                SetPlayerColor(i, purple);
            }
            else
            {
                switch(GetPlayerWantedLevel(i))
                {
                    case 0:
                    {
                        SetPlayerColor(i, white);
                    }
                    case 1 .. 3:
                    {
                        SetPlayerColor(i, yellow);
                    }
                    case 4 .. 6:
                    {
                        SetPlayerColor(i, red);
                    }
                }
            }
        }
    }
    return 1;
}