I want to have some text appear semi-transparent, but not in an overlay fashion (where it eventually becomes solid) just permanently semi-transparent. To complicate matters, the text in question is part of a matrix:
$
\begin{matrix}
& \{-2,3,5,0,8\} & \\
\{-2,3,5,0\} & & \{-2,3,5,8\} \\
& \{-2,3,5\} &
\end{matrix}
$
I want the third line in the matrix to be semi-transparent. Is there a way to do this?
Edit: improved the solution by turning it into a command with an optional argument.
Okay, discovered how to do it:
\newcommand{\semitransp}[2][35]{\textcolor{fg!#1}{#2}}
...
$
\begin{matrix}
& \{-2,3,5,0,8\} & \\
\{-2,3,5,0\} & & \{-2,3,5,8\} \\
& \semitransp{\{-2,3,5\}} &
\end{matrix}
$
The optional parameter controls the transparency. So \semitransp[20]{text} is lighter, and \semitransp[60]{text} is heavier. The default value 35 looks good on my computer screen. It is yet to be seen how it looks projected on a wall.