In Lubuntu 12.04 I have created a customised colour scheme (using LXAppearance) which uses orange for selected items instead of blue. Many applications don't appear to use the custom colour scheme however.
For example, in the system tray, xfce4-power-manager uses blue to highlight its menu selections while Network Manager uses orange. PCManFM uses orange to highlight selected files in the main window but blue in its menus.
Is there any way to apply custom colour themes consistently?