As may know, I am a 
Well, from the very beginning of my course I have to be able to write documents in
So, I found listings, great output! And even better, I could make my own style to one language. After reading the manual I did it for Haskell. I love the output.
You can see an example of that here(.pdf).
A simple definition of some colors to highlight our code:
\definecolor{gray_ulisses}{gray}{0.55}
\definecolor{castanho_ulisses}{rgb}{0.71,0.33,0.14}
\definecolor{preto_ulisses}{rgb}{0.41,0.20,0.04}
\definecolor{green_ulises}{rgb}{0.2,0.75,0}
And here it is, the thing that do things 
\lstdefinelanguage{HaskellUlisses} {
basicstyle=\ttfamily\tiny,
sensitive=true,
morecomment=[l][\color{gray_ulisses}\ttfamily\tiny]{--},
morecomment=[s][\color{gray_ulisses}\ttfamily\tiny]{\{-}{-\}},
morestring=[b]",
stringstyle=\color{red},
showstringspaces=false,
numberstyle=\tiny,
numberblanklines=true,
showspaces=false,
breaklines=true,
showtabs=false,
emph=
{[1]
FilePath,IOError,abs,acos,acosh,all,and,any,appendFile,approxRational,asTypeOf,asin,
asinh,atan,atan2,atanh,basicIORun,break,catch,ceiling,chr,compare,concat,concatMap,
const,cos,cosh,curry,cycle,decodeFloat,denominator,digitToInt,div,divMod,drop,
dropWhile,either,elem,encodeFloat,enumFrom,enumFromThen,enumFromThenTo,enumFromTo,
error,even,exp,exponent,fail,filter,flip,floatDigits,floatRadix,floatRange,floor,
fmap,foldl,foldl1,foldr,foldr1,fromDouble,fromEnum,fromInt,fromInteger,fromIntegral,
fromRational,fst,gcd,getChar,getContents,getLine,head,id,inRange,index,init,intToDigit,
interact,ioError,isAlpha,isAlphaNum,isAscii,isControl,isDenormalized,isDigit,isHexDigit,
isIEEE,isInfinite,isLower,isNaN,isNegativeZero,isOctDigit,isPrint,isSpace,isUpper,iterate,
last,lcm,length,lex,lexDigits,lexLitChar,lines,log,logBase,lookup,map,mapM,mapM_,max,
maxBound,maximum,maybe,min,minBound,minimum,mod,negate,not,notElem,null,numerator,odd,
or,ord,otherwise,pi,pred,primExitWith,print,product,properFraction,putChar,putStr,putStrLn,quot,
quotRem,range,rangeSize,read,readDec,readFile,readFloat,readHex,readIO,readInt,readList,readLitChar,
readLn,readOct,readParen,readSigned,reads,readsPrec,realToFrac,recip,rem,repeat,replicate,return,
reverse,round,scaleFloat,scanl,scanl1,scanr,scanr1,seq,sequence,sequence_,show,showChar,showInt,
showList,showLitChar,showParen,showSigned,showString,shows,showsPrec,significand,signum,sin,
sinh,snd,span,splitAt,sqrt,subtract,succ,sum,tail,take,takeWhile,tan,tanh,threadToIOResult,toEnum,
toInt,toInteger,toLower,toRational,toUpper,truncate,uncurry,undefined,unlines,until,unwords,unzip,
unzip3,userError,words,writeFile,zip,zip3,zipWith,zipWith3,listArray,doParse
},
emphstyle={[1]\color{blue}},
emph=
{[2]
Bool,Char,Double,Either,Float,IO,Integer,Int,Maybe,Ordering,Rational,Ratio,ReadS,ShowS,String,
Word8,InPacket
},
emphstyle={[2]\color{castanho_ulisses}},
emph=
{[3]
case,class,data,deriving,do,else,if,import,in,infixl,infixr,instance,let,
module,of,primitive,then,type,where
},
emphstyle={[3]\color{preto_ulisses}\textbf},
emph=
{[4]
quot,rem,div,mod,elem,notElem,seq
},
emphstyle={[4]\color{castanho_ulisses}\textbf},
emph=
{[5]
EQ,False,GT,Just,LT,Left,Nothing,Right,True,Show,Eq,Ord,Num
},
emphstyle={[5]\color{preto_ulisses}\textbf}
}
And now, to use it, we define a new environment:
\lstnewenvironment{code}
{\textbf{Haskell Code} \hspace{1cm} \hrulefill \lstset{language=HaskellUlisses}}
{\hrulesmallskip}
Now to write Haskell code in our
\begin{code}
module Main(main) where
main :: IO()
main = putStrLn $ "LaTeX listings is cool!"
\end{code}
Because I’m not so good at web design I use this blog layout (that I like), but some of the code may not be seen, if you want to see an example of a
Correu altamente a workshop de LaTeX organizada pelo CAOS. Mais um sucesso de toda a equipa que trabalha no CAOS. Foi um dia cheio de partilha de conhecimento. Eu mais o Nuno ficamos incrédulos com o grupo heterogéneo de participantes que tínhamos; dois professores do 
limitava-me a usar os templates que os professores disponibilizavam e assim fazia os relatórios para os trabalhos. Uma vez não tive tempo para usar um destes templates e aldrabei um documento, tinha sido escrito no Word e fi-lo a se parecer, no máximo dos meus conhecimentos do word, com um template 
