The title page of the PGF 2.00 manual.
Thanks to Ludger Humbert for submitting a standalone version of the titlepage.

Edit and compile if you like:
% isolated Frontpage of [Tantau 2008]% Mi 30. Apr 12:58:37 CEST 2008, lh%\documentclass{article}\usepackage{tikz}\usetikzlibrary{%decorations.fractals%,decorations.pathmorphing%,shadows%}\begin{document}\parindent0pt\null\colorlet{mintgreen}{green!50!black!50}\thispagestyle{empty}\vskip3cm\vfill\hfil\begin{tikzpicture}[overlay]\coordinate (front) at (0,0);\coordinate (horizon) at (0,.31\paperheight);\coordinate (bottom) at (0,-.6\paperheight);\coordinate (sky) at (0,.57\paperheight);\coordinate (left) at (-.51\paperwidth,0);\coordinate (right) at (.51\paperwidth,0);\shade [bottom color=blue!30!black!10,top color=blue!30!black!50]([yshift=-5mm]horizon -| left) rectangle (sky -| right);\shade [bottom color=black!70!green!25,top color=black!70!green!10](front -| left) -- (horizon -| left)decorate [decoration=random steps] { -- (horizon -| right) }-- (front -| right) -- cycle;\shade [top color=black!70!green!25,bottom color=black!25](front -| left) -- (horizon -| left)decorate [decoration=random steps] { -- (horizon -| right) }-- (front -| right) -- cycle;
Click to download: pgf2-titlepage.tex • pgf2-titlepage.pdf
Open in Overleaf: pgf2-titlepage.tex