The way it works, is by rendering the LaTeX math into an image, and sticks that image into your blogpost. Since it is an image, it has a background color. The feature was designed so that it tries to figure out the proper background color for your theme to fit the LaTeX in naturally. Unfortunately for me, my background color is white, but the LaTeX is rendered with background gray.
There is a way to change the color of a single equation. For instance:
$latex E = mc^2$
would produce the default background color, while
$latex E = mc^2&bg=ffffff$
would force the background to be white.
This is what I want to achieve, but for every equation in my post. I don't want to have to type
&bg=ffffff at the end of each LaTeX environment manually (it is already a big enough hassle to write
$latex instead of just
Is there a way to change the background color of all the math equations at once?
Alternatively, if no such method exists.
From where does the
$latex $feature guess the background color, and how can I change what it guesses?
Keep in mind that I am on WordPress.com so I can't simple switch to the MathJax-LaTeX plugin.