[Tex/LaTex] Beamer: Change color of items

beameritemize

I'm customising a Beamer theme for my own needs and I am wondering how I can efficiently work with parent templates. For example, I want to modify the color of all items (enumerate, itemize, table of content) to blue. I tried several things like

\setbeamercolor{enumerate item}{bg=deepBlue}

or

\setbeamercolor{item}{bg=deepBlue}

but none of the above works. Am I missing some parent template or logical structure?

It might intersect with a color scheme I use. A mini example is below:

\documentclass{beamer}

\usepackage[english]{babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}

\mode<presentation>
{
  \usetheme[secheader]{Boadilla}
  \setbeamercovered{transparent} % makes things that appear later transparent
  \usecolortheme{seagull} %gray and naughty
}

\definecolor{deepBlue}{HTML}{000066}

\setbeamercolor{itemize item}{fg=deepBlue}

\begin{document} 

\begin{frame}
\begin{itemize}
\item check
\item check
\end{itemize}
\end{frame}

\end{document}

Best Answer

You need to use fg

\documentclass{beamer}
\setbeamercolor{enumerate item}{ fg=red}
\begin{document}
\frame{
\begin{enumerate}
\item test
\end{enumerate}
}
\end{document}

Refer to beameruserguide to learn more about the coloring scheme in beamer.

Update after the MWE we see that you want the following:

Update 2 According to the comment one wants subitems too: 

\documentclass{beamer}

\usetheme[secheader]{Boadilla}

\usecolortheme{seagull} %gray and naughty


\definecolor{deepBlue}{HTML}{000066}

\setbeamercolor{item projected}{bg=deepBlue}
\usesubitemizeitemtemplate{%
    \tiny\raise1.5pt\hbox{\color{deepBlue}$\blacktriangleright$}%
}

\begin{document} 

\begin{frame}
\begin{itemize}
\item check
\begin{itemize}
\item check
\item check
\end{itemize}
\item check
\end{itemize}
\end{frame}

\end{document}

item projectedis a special version for setting colors with circles and numbers or balls. In that case you need bg again. See beameruserguide. Since Boadilla defines the subitems with some hard-coding we need to do alike. \usesubitemizeitemtemplate will force subitems to be as it's argument. Imo this is not quite a good coding style, since users have to look it up in the source.

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