FromLinux It is a site entirely linked to GNU / Linux, Free Software, etc. Yes, but we deal with such simple aspects how to change wallpapers in KDE, even something as complex as iptables manuals.
However, if what you are looking for is simply how to make your surroundings beautiful, you can go to our category «Appearance / Personalization«, As well as going to an expert site on this matter: Artdesktop.com
I precisely read in ArtsDesktop about these icon packs, and I want to share the post with you 
On the left you can see a preview of the icons Betelgeuse, and to the right the FaenK.
You can see a more complete preview of Betelgeuse here. - » Preview Betelgeuse
And of FaenK here -» Preview FaenK
To install the 1st (Betelgeuse) is simple, we must download it, unzip it and then copy it to our folder ~ / .kde4 / share / icons /
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~ » Download Betelgeuse icons "~
To install the 2nd (FaenK) is the same ... we must download it, unzip it and copy it to our folder ~ / .kde4 / share / icons /
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~ » Download FaenK icons "~
Once this is done, we just have to select the icon pack that we will use. For this we go to Configuration Panel de KDE, there we go Appearance of Applications (is one of the first options), and in the Icons We select the pack to use 
If you need any other help or anything, let me know 
Greetings and enjoy them ... I'm already downloading them to use them (I.e.
Thank you very much Artdesktop.com by post what they did talking about these iconsIf it had not been for them, what they read now would not have been possible.