Problem With HUD message?!

First of all to make the client_print in colors tell me.. What version of Amxmodx u are using? If you are using 1.8.3 try replacing

client_print(player, print_chat, "Jump Then press 'e' To Use Wall climb");
with
client_print_color(id, "Jump Then press 'e' To Use Wall climb");
and change the message how you like it.. Use ^4 for green, ^3 for team color and ^1 for normal/yellow color

#include <amxmodx>
#include <fakemeta>
#include <fakemeta_util>
#include <hamsandwich>
#include <zombieplague>

new bool:g_WallClimb[33]
new Float:g_wallorigin[32][3]
new g_maxplayers, item_climb

public plugin_init()
{
register_plugin("[ZP] Extra Item: Wall climb ", "1.0", "Python1320 & Accelerator")
register_forward(FM_Touch, "fwd_touch")
register_forward(FM_PlayerPreThink, "fwd_playerprethink")
RegisterHam(Ham_Killed, "player", "fw_PlayerKilled")

g_maxplayers = get_maxplayers()

item_climb = zp_register_extra_item("Wall climb", 17, ZP_TEAM_ZOMBIE)
}

public zp_extra_item_selected(player, itemid)
{
if (itemid == item_climb)
{
g_WallClimb[player] = true
new szName[32]
       get_user_name(id, szName, 31)
       set_hudmessage(127, 127, 255, -1.0, 0.66, 0, 6.0, 6.0)
       show_hudmessage(0, "%s just bought a Wall Climb!", szName)
//client_print(id, print_chat, "Jump Then press 'e' To Use Wall climb");

}
}

public zp_user_infected_post(id, infector)
g_WallClimb[id] = false

public zp_user_humanized_post(id, survivor)
g_WallClimb[id] = false

public fw_PlayerKilled(victim, attacker, shouldgib)
g_WallClimb[victim] = false

public zp_round_ended(winteam)
{
for (new id=1; id<=g_maxplayers; id++)
g_WallClimb[id] = false
}

public client_connect(id)
g_WallClimb[id] = false

public fwd_touch(id, world)
{
if(!is_user_alive(id) || !g_WallClimb[id])
return FMRES_IGNORED

pev(id, pev_origin, g_wallorigin[id])

return FMRES_IGNORED
}

public wallclimb(id, button)
{
static Float:origin[3]
pev(id, pev_origin, origin)

if(get_distance_f(origin, g_wallorigin[id]) > 25.0)
return FMRES_IGNORED  // if not near wall

if(fm_get_entity_flags(id) & FL_ONGROUND)
return FMRES_IGNORED

if(button & IN_FORWARD)
{
static Float:velocity[3]
velocity_by_aim(id, 120, velocity)
fm_set_user_velocity(id, velocity)
}
else if(button & IN_BACK)
{
static Float:velocity[3]
velocity_by_aim(id, -120, velocity)
fm_set_user_velocity(id, velocity)
}
return FMRES_IGNORED
}

public fwd_playerprethink(id)
{
if(!g_WallClimb[id])
return FMRES_IGNORED

new button = fm_get_user_button(id)

if(button & IN_USE) //Use button = climb
wallclimb(id, button)

return FMRES_IGNORED
}