In Ubuntu 11.10 with Nautilus it was possible to tweak the appearance of desktop icons by editing nautilus.css as I had posted in How can I change the text colour on my desktop icons?.
In Xubuntu the same can be done by adding a few lines to one's
.gtkrc-2.0 as described in How to highlight items on Desktop using xfce?.
In both cases, it is possible to assign colors to the various icon states (such as normal, selected and active).
Is it possible to do the same in Lubuntu? PCManFM seems to be responsible but I can't find any GUI or files to edit for the purpose. The default
~/.config/pcmanfm/lubuntu/pcmanfm.conf doesn't have any relevant settings.