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diff --git a/etc/themes/simple-16-theme.el b/etc/themes/simple-16-theme.el
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+;;; simple-16-theme.el --- Custom theme for faces  -*- lexical-binding:t -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; Author: Jimmy Aguilar Mena <spacibba@aol.com>
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(deftheme simple-16
+  "Dark theme with a set of simple 16 colors only.")
+
+(defmacro simple-16-theme-color (colorname)
+  "Get color by name COLORNAME from `simple-16-color-theme-alist'."
+  (alist-get colorname '((black . "#000000")
+                         (red . "#cd0000")
+                         (green . "#00cd00")
+                         (yellow . "#cdcd00")
+                         (blue . "#0000ee")
+                         (magenta . "#cd00cd")
+                         (cyan . "#00cdcd")
+                         (white . "#e5e5e5")
+                         (brightblack . "#444444") ;;
+                         (brightred . "#ff0000")
+                         (brightgreen . "#00ff00")
+                         (brightyellow . "#ffff00")
+                         (brightblue . "#5c5cff")
+                         (brightmagenta . "#ff00ff")
+                         (brightcyan . "#00ffff")
+                         (brightwhite . "#ffffff"))))
+
+(custom-theme-set-faces
+ 'simple-16
+ `(default ((t (:background ,(simple-16-theme-color black)
+                                 :foreground ,(simple-16-theme-color white)))))
+
+ `(font-lock-preprocessor-face ((t (:foreground ,(simple-16-theme-color magenta)))))
+ `(font-lock-comment-face ((t (:foreground ,(simple-16-theme-color cyan)))))
+ `(font-lock-doc-face ((t (:foreground ,(simple-16-theme-color cyan)))))
+ `(font-lock-string-face ((t (:foreground ,(simple-16-theme-color red)))))
+ `(font-lock-function-name-face ((t (:foreground ,(simple-16-theme-color white)))))
+ `(font-lock-variable-name-face ((t (:foreground ,(simple-16-theme-color white)))))
+ `(font-lock-constant-face ((t (:foreground ,(simple-16-theme-color magenta)))))
+ `(font-lock-type-face ((t (:foreground ,(simple-16-theme-color green)))))
+ `(font-lock-keyword-face ((t (:foreground ,(simple-16-theme-color yellow)))))
+ `(font-lock-builtin-face ((t (:foreground ,(simple-16-theme-color green)))))
+
+ `(highlight ((t (:background ,(simple-16-theme-color brightblack)
+                                   :foreground nil))))
+ `(secondary-selection ((t (:background ,(simple-16-theme-color brightblack)
+                                             :foreground nil))))
+
+ `(isearch ((t (:background ,(simple-16-theme-color blue)
+                                 :foreground ,(simple-16-theme-color white)
+                                 :weight ultrabold))))
+ `(lazy-highlight ((t (:background ,(simple-16-theme-color brightblue)))))
+
+ `(region ((t (:background ,(simple-16-theme-color brightblue)))))
+
+ `(mode-line ((t (:background ,(simple-16-theme-color blue)
+                                   :foreground ,(simple-16-theme-color white)))))
+ `(mode-line-inactive ((t (:background ,(simple-16-theme-color brightblack)
+                                            :foreground ,(simple-16-theme-color white)))))
+
+ `(line-number ((t (:foreground ,(simple-16-theme-color brightblack)))))
+ `(line-number-current-line ((t (:foreground ,(simple-16-theme-color green)))))
+ `(fill-column-indicator ((t (:foreground ,(simple-16-theme-color brightblack)))))
+
+ `(show-paren-match ((t (:background ,(simple-16-theme-color brightblack)
+                                          :inherit nil))))
+
+ `(tab-bar ((t (:background ,(simple-16-theme-color black)
+                                 :foreground ,(simple-16-theme-color white)
+                                 :inverse-video nil))))
+ `(tab-bar-tab ((t (:inherit tab-bar :weight ultra-bold :underline t))))
+
+ `(tab-bar-tab-inactive ((t (:background ,(simple-16-theme-color black)
+                                              :foreground ,(simple-16-theme-color brightwhite)
+                                              :weight normal
+                                              :underline nil))))
+
+ `(Man-overstrike ((t (:inherit font-lock-type-face :bold t))))
+ `(Man-overstrike ((t (:inherit font-lock-keyword-face :underline t))))
+
+ `(which-func ((t (:background nil :foreground ,(simple-16-theme-color white)))))
+
+ ;; External packages
+ ;; Company
+ `(company-tooltip ((t (:background ,(simple-16-theme-color brightblack)
+                                         :foreground ,(simple-16-theme-color white)))))
+ `(company-tooltip-common ((t (:inherit company-tooltip
+                                        :foreground ,(simple-16-theme-color green)))))
+ `(company-tooltip-selection ((t (:background ,(simple-16-theme-color blue)
+                                              :weight ultra-bold))))
+ `(company-scrollbar-bg ((t (:background ,(simple-16-theme-color brightblack)))))
+ `(company-scrollbar-fg ((t (:background ,(simple-16-theme-color blue)))))
+
+ `(company-scrollbar-fg ((t (:foreground ,(simple-16-theme-color cyan)))))
+
+ ;; Ivy
+ `(ivy-minibuffer-match-face-1 ((t (:inherit nil :background nil
+                                                  :foreground nil
+                                                  :underline t))))
+ ;; Ivy like lazy-highlight
+ `(ivy-minibuffer-match-face-2 ((t (:background ,(simple-16-theme-color brightblue)))))
+ `(ivy-minibuffer-match-face-3 ((t (:background ,(simple-16-theme-color brightblue)))))
+ `(ivy-minibuffer-match-face-4 ((t (:background ,(simple-16-theme-color brightblue)))))
+
+ ;; Swiper
+ `(swiper-match-face-1 ((t (:inherit nil :background nil :underline t))))
+ ;; Swiper like lazy-highlight
+ `(swiper-background-match-face-2 ((t (:background ,(simple-16-theme-color brightblue)))))
+ `(swiper-background-match-face-3 ((t (:background ,(simple-16-theme-color brightblue)))))
+ `(swiper-background-match-face-4 ((t (:background ,(simple-16-theme-color brightblue)))))
+ ;; Swiper background like isearch
+ `(swiper-match-face-2 ((t (:background ,(simple-16-theme-color brightblue)))))
+ `(swiper-match-face-3 ((t (:background ,(simple-16-theme-color brightblue)))))
+ `(swiper-match-face-4 ((t (:background ,(simple-16-theme-color brightblue)))))
+
+ ;; Avy
+ `(avy-lead-face ((t (:background ,(simple-16-theme-color blue)
+                                       :foreground ,(simple-16-theme-color red)))))
+ )
+
+(provide-theme 'simple-16)
+
+;;; simple-16-theme.el ends here