From the Edit menu, choose Text Properties and then Display Faces. You’ll get a display of the currently-defined Faces. The ones you will be more likely to want to change are those starting
‘font-lock-’, such as
‘font-lock-keyword-face’. – MichaelMason (May 30, 2001, comp.emacs)
You can change the foreground and background colors or other properties of a face using Customize. To find the name of the face you want to customize, do one of the following (from easiest to hardest):
‘C-mouse-2’). See EasyWay, below.
‘M-x customize-face’– just hit
‘RET’(Return) to accept the default face proposed; it is the face of the text under the cursor.
‘font-lock-keyword-face’, click Face next to the face name. A new window opens containing the face definition.
Colors are visual (duh!). Why pick colors and faces by name? Why pick colors by RGB components? Unless you know the color name or the components you want, that is not the way to go. What you want to do is change some existing face, whose name you might not even know. You want to tweak it a bit, or you want to use a general color palette to define or adjust its color. You want to just point at it to grab it and then adjust it or redefine it.
Load library Lisp:facemenu+.el (see FaceMenuPlus). Then point to some text whose face you want to customize and use
‘C-mouse-2’. That pops up the Text Properties menu. Pick a menu item: Do Re Mi – Change Face Foreground for incremental change using the arrow keys or Palette – Change Face Foreground to use a color palette. Or choose Eyedropper Copy Foreground Color to copy a color from anywhere in Emacs – you can then paste that color to another face foreground or background. Likewise, for working with background colors. There are also menu items for undoing face color changes.
After you get a face the way you want it, choose menu item Customize Face to open Customize and save your changes for future Emacs sessions. Everything is in the same menu, only a click away.
You’ve customized a bunch of stuff, only setting it for the current session – you haven’t saved your changes for future sessions (perhaps because you wanted to try them out first). Now, you would like to revisit Customize for each of the things you’ve changed, and perhaps save some of those changes. What do you do?
The answer is command
‘customize-customized’. It’s not bound, by default, and it’s not very well advertised, but it will open a Customize buffer with all of your changes, both variables and faces. – DrewAdams
Customize doesn’t play too well with the rest of Emacs, IMO. Suppose you change something from a Lisp program. Customize will recognize that it has changed (usually), but it doesn’t consider the change to be “set” for the current session. This is a distinction only a medieval theologian would appreciate.
So, how can you tell Customize to “set” a change you’ve already made, so that, for instance, you can use
‘customize-customized’ to revisit it later to save it (see CustomizeCustomized)? The answer is that you will have to create some Lisp code to do that, because (AFAICS) there is nothing available to help you.
As far as faces go, I wrote this to tell Customize that a face has been changed. (I use this in commands like
‘doremi-face-fg’ of library Lisp:doremi-frm.el.)
(defun doremi-face-set (face spec) "Tell Customize that FACE has been set to value SPEC. SPEC is as for `defface'." (put face 'customized-face spec) (face-spec-set face spec) (message (substitute-command-keys "Use `\\[customize-customized]' to revisit changes.")))
Obviously, the key points are 1) adding the
‘customized-face’ property with the changed value and 2) calling
‘face-spec-set’. I added the message to help people learn about
‘customize-customized’. – DrewAdams
If you want different color schemes for different displays, you can customize this as well. In the customize buffer, click the [State] button and choose “Show all display specs”. Now you can use different specs for different displays.
If you use MultiTty? and want different colors for X and TTY, does customize work?
Anything is a candidate selection framework.
Start with M-x anything-colors, narrow the face list by typing some patterns(multiple patterns are space-delimited string), select with up/down/pgup/pgdown/C-p/C-n/C-v/M-v, choose with enter to customize selected face,
Just a note that after spending several hours trying to figure out why a color-theme wasn’t displaying the text under the cursor correctly for me on OSX, it appears according to the people on the emacs irc channel that the cursor is controlled by the operating system. Under OSX, apparently the foreground color cannot be adjusted. If you change this value within emacs you won’t see the result reflected as it will be ignored. It appears to work fine under Windows and Linux. The issues with OSX were noticed using OSX 10.6 and 10.7. – Josh
Edit: The cursor colors function correctly with gnu emacs for osx v24, so they appear to have fixed whatever prevented it working with earlier versions. – Josh