Here it is, coded and up for grabs!
What makes this notification style special is the custom pop-up animation and an opaque hover. It's just enough to set it apart from the one you may currently be using.
Unfortunately, I wasn't able to accomplish the style I envisioned earlier. I got it about 90% there, but I couldn't get the gutter to render like I wanted. No matter what I tried, there was always about a 5 pixel gap between the edges. If anyone figures out a solution, I'll get started on a re-release.
Let me know if you end up using it. Enjoy! :)
Background is from @Jan Losert's space pack, awesome stuff.
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