I am trying to modify Beamer's Berkeley theme. I'd like to have the oblique blue line at the bottom of each slide to break in the middle of the slide and insert in a mirror another logo over a white background. Unfortunately, I am not that skilled with such complex LaTeX code.

  • I don't have, or want, an Overleaf account. If there were a way for me to access the theme without one, I might try to help. I urge Overleaf users to complain about its reckless profileration of packages not on CTAN. That's harmful to the LaTeX ecosystem.
    – frabjous
    Commented Jun 20, 2022 at 1:40

1 Answer 1


In the file beamerthemeUCBerkeley.sty, search for \setbeamertemplate{background} and replace that with this code.

\begin{tikzpicture}[overlay,remember picture]
\fill[BerkeleyBlue] (current page.south west) -- +(0, 0.18\paperheight) -- +(0.5*\paperwidth, 0.08\paperheight) -- (current page.south) -- cycle;
\node[anchor=south west,inner sep=0pt,draw=none,xshift=0.055\paperheight,yshift=0.04\paperheight] at (current page.south west) {\pgfuseimage{logo}};%

% 2nd logo
\node[anchor=south east, inner sep=5pt, xshift=-0.055\paperheight, yshift=0.04\paperheight, fill=BerkeleyBlue] at (current page.south east) {\pgfuseimage{logo}};


enter image description here

You can adjust xshift and yshift in the 2nd logo to place it as you like. The inner sep setting controls the padding between the logo and its fill border.


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