copy
# models.py
class Model():
 
	...
 
    def title(self):
    	is_last = Model.objects.all().order_by('-date').pk == self.pk
        if is_last:
        	return '<b style="font-size:16px; color:....">%s<b>' % self.somefield
        return self.somefield
    title.allow_tags = True
    title.short_description = _(u'SomeField')
 
 
# admin.py
class ModelAdmin(admin.ModelAdmin):
 
	list_display = ('title',)