Presentation and issues

Hi guys, I’m Gionni78 and I am a passionate lubuntu user; first because my machine couldn’t support other distros as well as it does with lubuntu, and then 'cause this OS has a good appearance and it’s really very easy to use.
The issue I refer to in the title is not related to my OS, but i think to my browser, Opera; in fact i would like to download some theme for my desktop and windows but i couldn’t download it, because it seems that there isn’t a link/button that allowed me to do it.
Any suggestion?
Thanks for the time you dedicated (and lost) to me.

do you have any example link to what you would like to download?