spacemacs/layers/+themes/colors/README.org

Colors layer

• Description
• Install
  • Enable rainbow-identifiers
  • Enable Nyan cat
• Key bindings
  • Rainbow Identifiers
  • Rainbow Mode
  • Nyan Mode

Description

This layer colors your life with:

• rainbow identifiers mode will colorize each variables and functions with an almost unique color. The keywords and the declaration of function colors are disabled in order to make the colorized variables and functions stand out.
• 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.

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.

Enable rainbow-identifiers

To enable rainbow-identifiers-mode by default in programing language buffers, set the variable colors-enable-rainbow-identifiers-by-default to t:

  (setq-default dotspacemacs-configuration-layers '(
    (colors :variables colors-enable-rainbow-identifiers-by-default t)))

Saturation and lightness of identifiers 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).

Example:

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

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))))

Key bindings

The prefix associated with colors is C.

Rainbow Identifiers

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

SPC t C i

Note that the toggle is local to the current buffer.

The saturation and lightness of identifier colors can be adjusted live 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

Rainbow Mode

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

SPC t C c

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.