Human theme doesn't adapted to low screen resolutions

[yurik 81]

At 1024x768 the main menu items have large icons. I find out that icon
sizes hard coded in Human theme as 'gtk-icon-sizes =
"panel-menu=24,24:gtk-button=16,16"'. So, to change 'panel-menu' and
'gtk-button'  I must
edit Human theme, because '~/.gtkrc-2.0' can not override
gtk-icon-sizes. Why wouldn't move 'gtk-icon-sizes' from Human theme to
'/etc/gtk-2.0/gtkrc' because it can be overridden by '~/.gtkrc-2.0'?