Alternatively, instead of having to install Greasemonkey, you can use the following bookmarklet:
javascript:var bgCol='#4f4f4f';var txtCol='#efefef';var eles=document.getElementsByTagName(%22td%22);var pattern = new RegExp("(^|s)BoardDescriptionNew(s|$)");for(i=0;i<eles.length;i++){if (pattern.test(eles[i].className) ){eles[i].style.backgroundColor=bgCol;var col = eles[i].getElementsByTagName(%22a%22);for(j=0;j<col.length;j++)col[j].style.color=txtCol}}void(null);
Copy + Paste that into a bookmark as the URL. Change the two values of bgCol and txtCol for the colours of the text and background, then 'open' the bookmark when you're viewing the front page of threads...
[EDIT]
ionstream's works for viewing new posts when within the thread, and mine works for viewing threads that have new posts in them on the man board page
[/EDIT]