how to change ugly themes i.e. acroread, xcdroast and other apps

[Pascal Bonesh <firms@tiscali.ch>]

Hi,

I just wondered why some apps turn out to look ugly/oldfashioned. 

I.e. gktalog, nmapfe, xcdroast and acroread. Are they plain X-11 apps or
are they using some old gtk 1.x toolkit?

I would like to change the look of these apps so that they closer match
my gnome 2.6 Simple theme.

Does somebody know a way?

Thank you,
Pascal