Update: I have just found out the forum LaTeX function also includes xColor pack. The colors possible to use on forum are:
black,
\(\color{}{\text{Testing}}\)
blue,
\(\color{blue}{\text{Testing}}\)
brown,
\(\color{brown}{\text{Testing}}\)
cyan,
\(\color{cyan}{\text{Testing}}\)
darkgray,
\(\color{darkgray}{\text{Testing}}\)
gray,
\(\color{grey}{\text{Testing}}\)
green,
\(\color{green}{\text{Testing}}\)
lightgray,
\(\color{lightgray}{\text{Testing}}\)
lime,
\(\color{lime}{\text{Testing}}\)
magenta,
\(\color{magenta}{\text{Testing}}\)
olive,
\(\color{olive}{\text{Testing}}\)
orange,
\(\color{orange}{\text{Testing}}\)
pink,
\(\color{pink}{\text{Testing}}\)
purple,
\(\color{purple}{\text{Testing}}\)
red,
\(\color{red}{\text{Testing}}\)
teal,
\(\color{teal}{\text{Testing}}\)
violet,
\(\color{violet}{\text{Testing}}\)
white,
\(\color{white}{\text{Testing}}\)
yellow,
\(\color{yellow}{\text{Testing}}\)
AliceBlue,
\(\color{AliceBlue}{\text{Testing}}\)
Apricot,
\(\color{Apricot}{\text{Testing}}\)
Aquamarine,
\(\color{Aquamarine}{\text{Testing}}\)
Bittersweet,
\(\color{Bittersweet}{\text{Testing}}\)
Black,
\(\color{Black}{\text{Testing}}\)
Blue,
\(\color{Blue}{\text{Testing}}\)
BlueGreen,
\(\color{BlueGreen}{\text{Testing}}\)
BlueViolet,
\(\color{BlueViolet}{\text{Testing}}\)
BrickRed,
\(\color{BrickRed}{\text{Testing}}\)
Brown,
\(\color{Brown}{\text{Testing}}\)
BurntOrange,
\(\color{BurntOrange}{\text{Testing}}\)
CadetBlue,
\(\color{CadetBlue}{\text{Testing}}\)
CarnationPink,
\(\color{CarnationPink}{\text{Testing}}\)
Cerulean,
\(\color{Cerulean}{\text{Testing}}\)
CornflowerBlue,
\(\color{CornflowerBlue}{\text{Testing}}\)
Cyan,
\(\color{Cyan}{\text{Testing}}\)
Dandelion,
\(\color{Dandelion}{\text{Testing}}\)
DarkOrchid,
\(\color{DarkOrchid}{\text{Testing}}\)
Emerald,
\(\color{Emerald}{\text{Testing}}\)
ForestGreen,
\(\color{ForestGreen}{\text{Testing}}\)
Fuchsia,
\(\color{Fuchsia}{\text{Testing}}\)
Goldenrod,
\(\color{GoldenRod}{\text{Testing}}\)
Gray,
\(\color{Gray}{\text{Testing}}\)
Green,
\(\color{Green}{\text{Testing}}\)
GreenYellow,
\(\color{GreenYellow}{\text{Testing}}\)
JungleGreen,
\(\color{JungleGreen}{\text{Testing}}\)
Lavender,
\(\color{Lavender}{\text{Testing}}\)
LightBlue,
\(\color{LightBlue}{\text{Testing}}\)
LightCyan,
\(\color{LightCyan}{\text{Testing}}\)
LightGreen,
\(\color{LightGreen}{\text{Testing}}\)
LightPink,
\(\color{LightPink}{\text{Testing}}\)
LightYellow,
\(\color{LightYellow}{\text{Testing}}\)
Lime,
\(\color{Lime}{\text{Testing}}\)
LimeGreen,
\(\color{LimeGreen}{\text{Testing}}\)
Magenta,
\(\color{Magenta}{\text{Testing}}\)
Mahogany,
\(\color{Mahogany}{\text{Testing}}\)
Maroon,
\(\color{Maroon}{\text{Testing}}\)
Melon,
\(\color{Melon}{\text{Testing}}\)
MidnightBlue,
\(\color{MidnightBlue}{\text{Testing}}\)
Mulberry,
\(\color{Mulberry}{\text{Testing}}\)
NavyBlue,
\(\color{NavyBlue}{\text{Testing}}\)
OliveGreen,
\(\color{OliveGreen}{\text{Testing}}\)
Orange,
\(\color{Orange}{\text{Testing}}\)
OrangeRed,
\(\color{OrangeRed}{\text{Testing}}\)
Orchid,
\(\color{Orchid}{\text{Testing}}\)
Peach,
\(\color{Peach}{\text{Testing}}\)
Periwinkle,
\(\color{Periwinkle}{\text{Testing}}\)
PineGreen,
\(\color{PineGreen}{\text{Testing}}\)
Plum,
\(\color{Plum}{\text{Testing}}\)
ProcessBlue,
\(\color{ProcessBlue}{\text{Testing}}\)
Purple,
\(\color{Purple}{\text{Testing}}\)
RawSienna,
\(\color{RawSienna}{\text{Testing}}\)
Red,
\(\color{Red}{\text{Testing}}\)
RedOrange,
\(\color{RedOrange}{\text{Testing}}\)
RedViolet,
\(\color{RedViolet}{\text{Testing}}\)
Rhodamine,
\(\color{Rhodamine}{\text{Testing}}\)
RoyalBlue,
\(\color{RoyalBlue}{\text{Testing}}\)
RoyalPurple,
\(\color{RoyalPurple}{\text{Testing}}\)
RubineRed,
\(\color{RubineRed}{\text{Testing}}\)
Salmon,
\(\color{Salmon}{\text{Testing}}\)
SeaGreen,
\(\color{SeaGreen}{\text{Testing}}\)
Sepia,
\(\color{Sepia}{\text{Testing}}\)
Silver,
\(\color{Silver}{\text{Testing}}\)
SkyBlue,
\(\color{SkyBlue}{\text{Testing}}\)
SpringGreen,
\(\color{SpringGreen}{\text{Testing}}\)
Tan,
\(\color{Tan}{\text{Testing}}\)
TealBlue,
\(\color{TealBlue}{\text{Testing}}\)
Thistle,
\(\color{Thistle}{\text{Testing}}\)
Turquoise,
\(\color{Turquoise}{\text{Testing}}\)
Violet,
\(\color{Violet}{\text{Testing}}\)
VioletRed,
\(\color{VioletRed}{\text{Testing}}\)
White,
\(\color{White}{\text{Testing}}\)
WildStrawberry,
\(\color{WildStrawberry}{\text{Testing}}\)
Yellow,
\(\color{Yellow}{\text{Testing}}\)
YellowGreen,
\(\color{YellowGreen}{\text{Testing}}\)
YellowOrange,
\(\color{YellowOrange}{\text{Testing}}\)
P.S.
(1) The colors are CaSe-SeNsItIvE, That means Green and green are 2 colours.
(2) This is very hard work!! Took me like 2 hours XD
Hope this can help you guys
~Max