\begin{pspicture}(-4,-3)(4,1)
\psset{fillstyle=solid,shadow=true,shadowangle=0}
\DeclareFixedFont{\babyfont}{T1}{ptm}{m}{n}{2cm}
\DeclareFixedFont{\wordfont}{T1}{ptm}{m}{n}{1.5cm}
\def\Cc#1#2{\pscharpath[fillcolor=#1]{#2}}
\bfseries
\rput(0,0){\babyfont
\Cc{red}B\Cc{green}A\Cc{yellow}B%
\Cc{red}{Y'}\Cc{blue}S}
\rput(0,-2){{\wordfont\Cc{blue}{WORLD}}}
\end{pspicture}
