[pstricks] psaxes tick color

[mathias legrand]

Hi all,

I could not find a way to change the color of the ticks in pstricks in 
the \psaxes command. I feel like there may
be something similar to 
\def\pshlabel#1{\scriptsize\sffamily\textcolor{gray!50}{#1}} for the ticks?

thank you

(otherwise I can do it by hand by redrawing the ticks through a multido 
loops)