You must have only *ONE* $announce(NEWDIR) variable.
Code:
set announce(NEWDIR) "\[[c]%scolor[b]%section[b][c]\] + New: %path/[b]%release[b] by [b]%user[b]/%group"
And that's all.
The %scolor cookie is replaced with the section's color and the %section one with the section's name.
Beware, sections are case sensitive.
set color(stuff) "7"
is different from
set color(STUFF) "7"