founds it - not so easy! If anyone wants this for future reference it's in
...\AwareIM\Tomcat\webapps\AwareIM\ext30\resources\css\ext-all.css
Do a find for for .x-tree-node{ color:#000;
I was able to go up to 15 without messing with the spacing of the layout, but settled on 13 as a nice size. I think when I get some time I will ad a little more padding to to make the layout less cramped.
