Semi Transparent Backgrounds, glares and textures

I am creating a PlugIn for WordPress for Child Theme creation, I need theme graphics all semi transparent, Menus, Backgrounds, Glares and Textures to include free with the plugin, maybe about 10-20 of each. The idea is that they will be able to select a backgrount color and a semi transparent image to change different elements, and the look and feel of the website. If you know WordPress then you will know that the Plugins are released as free, so there is no profit in it for me, later we will may be able to extend the library on a pay per download to get some revenue. I am a coder not a graphics guy so I need to get these created, you may already have them they must be semi-transparent to be overlayed, re-distibutable and your own work. David