Table of Contents

Colors layer

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1 Description

This layer colors your life with:

  • rainbow identifiers mode will colorize all identifiers (christmas tree mode :-)) with an almost unique color.
  • color-identifiers mode will colorize only identifiers recognized as variables.
  • rainbow mode displays strings representing colors with the color they represent as background.
  • nyan mode display a Nyan cat progress bar in the mode-line.

2 Install

To use this configuration layer, add it to your ~/.spacemacs. You will need to add colors to the existing dotspacemacs-configuration-layers list in this file.

3 Configuration

3.1 Colorize identifiers

To colorize some identifiers by default in programming language buffers, set the layer variables colors-colorize-identifiers to either variables or all. variables will colorize only words recognized as variables, all will colorize all the words.

(setq-default dotspacemacs-configuration-layers '(
  (colors :variables colors-colorize-identifiers 'all)))

When using the value all the Saturation and lightness of can be set per theme by adding an entry in the variable colors-theme-identifiers-sat&light. This is an alist where the key is a theme symbol and the value is a pair (saturation lightness).

For now saturation and lightness are not supported with the variables value.


(push '(mytheme . (50 50)) colors-theme-identifiers-sat&light)

3.2 Enable Nyan cat

To enable the package nyan-mode set the variable colors-enable-nyan-cat-progress-bar to t:

(setq-default dotspacemacs-configuration-layers '(
  (colors :variables colors-enable-nyan-cat-progress-bar t)))

It may be handy to enable it only in a GUI, you can do it by using a quasi-quoted list:

(setq-default dotspacemacs-configuration-layers
  =((colors :variables
            colors-enable-nyan-cat-progress-bar ,(display-graphic-p))))

4 Key bindings

The prefix associated with colors is C.

4.1 Colorize Identifiers

Key Binding Description
SPC C a colorize all idendifiers in current buffer
SPC C C-a globally colorize all idendifiers and all subsequent buffers
SPC C v colorize all variables only in current buffer
SPC C C-v globally colorize all variables only and all subsequent buffers

The saturation and lightness of identifier colors can be adjusted live when colorizing all the identifiers with the transient-state:

Key Binding Description
SPC C i s initiate change saturation mini-mode
SPC C i l initiate change lightness mini-mode
+ increase the saturation or lightness
- decrease the saturation or lightness
= reset the saturation or lightness
Any other key leave the change mini-mode

4.2 Rainbow Mode


rainbow-mode mode can be toggled on and off with:

SPC t C c

4.3 Nyan Mode

nyan-mode mode can be toggled on and off with:

SPC t m n

Note that the toggle is local to the current buffer.

Author: Sylvain Benner

Created: 2016-10-03 Mon 00:55