Well this went faster than I thought...
Here's a first release of my port of ambiance to plasma (there's still some things to be done though, view it as a beta release
credit to ramzea for klipper icon [link]
and the ubuntu artwork team for some of the other mono icons
a couple more mono icons
hover/focus on buttons
a few minor fixes
fixed an issue with the panel when set to "Windows can cover"
removed blur under shadows
made tooltips more opaque when blur is off (for readability)
changed selection hover image
added a couple of mono icons
updated some elements that were still using backgrounds from uniq (which it's based on), most notably krunner
added opaque elements for when compositing is off