\psset{unit=.6cm}

 \RDD{blendmode} ({\blue \dft{} : blendmode=0})

\bigskip
\begin{tabular}{|c|c|c|c|}
\hline
\BS{}psset\AC{\red{blendmode=1}}   & \BS{}psset\AC{\red{blendmode=2}}  & \BS{}psset\AC{\red{blendmode=3}} & \BS{}psset\AC{\red{blendmode=0}} \\ 
( type /Compatible)   & (type /Screen )  & (type /Multiply) & (type /Normal) \\ 
 
\hline
\psset{blendmode=1}% type /Compatible
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape](-1,-1)(2,2)
\end{pspicture}
 &
 \psset{blendmode=2}% type /Screen 
 \begin{pspicture}(-2.5,-2.5)(2.5,2.5)
  \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
  \psframe[fillcolor=blue,fillstyle=shape](-1,-1)(2,2)
 \end{pspicture} 
   & 
\psset{blendmode=3}% type /Multiply
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape](-1,-1)(2,2)
\end{pspicture}
    &
\psset{blendmode=0}% type /Normal
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape](-1,-1)(2,2)
\end{pspicture} 
      \\ \hline 
\multicolumn{4}{|c|}{ \BS{}psframe[fillcolor=red,fillstyle=\RDDD{shape}{fillstyle}](-2,-2)(1,1)
       \BS{}psframe[fillcolor=blue,fillstyle=shape](-1,-1)(2,2)}\\

\hline 
\end{tabular} 
\bigskip


 \RDD{shapealpha} ({\blue  \dft{} : shapealpha=0.6})

\bigskip




\begin{tabular}{|c|c|c|c|c|}
\hline
&\BS{}psset\AC{blendmode=1}   & \BS{}psset\AC{blendmode=2}  & \BS{}psset\AC{blendmode=3} & \BS{}psset\AC{blendmode=0} \\ 
\hline
\begin{pspicture}(0,-2.5)(1,2.5)
\psTextFrame*[linecolor=white,rot=90](0,-2)(1,2){%
{\centering \color{red} shapealpha=0}}
\end{pspicture}
&
\psset{blendmode=1}% type /Compatible
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=0](-1,-1)(2,2)
\end{pspicture}
&
\psset{blendmode=2}% type /Screen 
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=0](-1,-1)(2,2)
\end{pspicture} 
&
\psset{blendmode=3}% type /Multiply
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=0](-1,-1)(2,2)
\end{pspicture}
&
\psset{blendmode=0}% type /Normal
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=0](-1,-1)(2,2)
\end{pspicture}\\

\hline
\begin{pspicture}(0,-2.5)(1,2.5)
\psTextFrame*[linecolor=white,rot=90](0,-2)(1,2){%
{\centering \color{red} shapealpha=0.3}}
\end{pspicture}
&
\psset{blendmode=1}% type /Compatible
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=0.3](-1,-1)(2,2)
\end{pspicture}
&
\psset{blendmode=2}% type /Screen 
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=0.3](-1,-1)(2,2)
\end{pspicture} 
&
\psset{blendmode=3}% type /Multiply
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=0.3](-1,-1)(2,2)
\end{pspicture}
&
\psset{blendmode=0}% type /Normal
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=0.3](-1,-1)(2,2)
\end{pspicture}\\

\hline
\begin{pspicture}(0,-2.5)(1,2.5)
\psTextFrame*[linecolor=white,rot=90](0,-2)(1,2){%
{\centering \color{red} shapealpha=1}}
\end{pspicture}
&
\psset{blendmode=1}% type /Compatible
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=1](-1,-1)(2,2)
\end{pspicture}
&
\psset{blendmode=2}% type /Screen 
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=1](-1,-1)(2,2)
\end{pspicture} 
&
\psset{blendmode=3}% type /Multiply
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=1](-1,-1)(2,2)
\end{pspicture}
&
\psset{blendmode=0}% type /Normal
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
 \psframe[fillcolor=red,fillstyle=shape](-2,-2)(1,1)
 \psframe[fillcolor=blue,fillstyle=shape,shapealpha=1](-1,-1)(2,2)
\end{pspicture}\\

\hline 
\multicolumn{5}{|c|}{
       \BS{}psframe[fillcolor=blue,fillstyle=shape,shapealpha=1](-1,-1)(2,2)}\\

\hline  
\end{tabular}


\psset{unit=1cm}