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Is it possible to select a piece of text you're editing and change its color? I know it's possible to create a color theme that will color certain kinds of text (like for example coloring functions in a certain programming language), but is it possible to do a one time color change to a selected piece of text in a specific emacs document without creating a theme? thanks in advance.
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To customize colors for color syntax highlighting, see the section on font-lock . To change the foreground or background color in Emacs through the windowing interface, you can use the menu commands Foreground Color->Other and Background Color->Other in the Edit->Text Properties menu.
set a theme Alt + x load-theme , then press Tab to show a list of available themes. Alternatively, Alt + x customize-themes to set a color theme.
Call customize-themes to set a color theme. emacs M-x customize-themes. Click to see the change immediately. Alternatively, call load-theme , then press Tab ↹ to show a list of available themes.
A theme doesn't allow you to specify the color of arbitrary text in any case. It only describes a set of face to be used by font-lock.
To apply a face to an arbitrary piece of text, select the text, then M-: (add-text-properties (region-beginning) (region-end) '(face font-lock-warning-face))
See the faces section of the elisp manual on how to create a face.
Emacs also comes with the hi-lock package, which can highlight regexps or lines containing regexps. See manual
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