Personal ``vim`` colorscheme

[Mischback]

Develop a personal colorscheme (including colors for airline plugin.

• focus on 256 color terminals
• more smooth colors for true 24-bit terminals
• Use GitHub's dark style as reference

References

• https://github.com/termstandard/colors
  • standard putty supports 256 colors
  • MS's built-in ssh client supports 24-bit colors
• https://www.ditig.com/256-colors-cheat-sheet
• https://upload.wikimedia.org/wikipedia/commons/1/15/Xterm_256color_chart.svg
• https://github.com/ggalindezb/vim_colorscheme_template/blob/master/template.vim
• https://devhints.io/vimscript
• https://github.com/casr/vim-colors-reference

Other Colorschemes

• https://github.com/joshdick/onedark.vim
• https://github.com/NLKNguyen/papercolor-theme

[Mischback]

vim Default Highlight Groups

https://github.com/vim/vim/blob/master/runtime/doc/syntax.txt#L5303

• ColorColumn: Used for the columns set with 'colorcolumn'.
• Conceal: Placeholder characters substituted for concealed text (see 'conceallevel').
• Cursor: Character under the cursor.
• lCursor: Character under the cursor when |language-mapping| is used (see 'guicursor').
• CursorIM: Like Cursor, but used when in IME mode. |CursorIM|
• CursorColumn: Screen column that the cursor is in when 'cursorcolumn' is set.
• CursorLine: Screen line that the cursor is in when 'cursorline' is set.
• Directory: Directory names (and other special names in listings).
• DiffAdd: Diff mode: Added line. |diff.txt|
• DiffChange: Diff mode: Changed line. |diff.txt|
• DiffDelete: Diff mode: Deleted line. |diff.txt|
• DiffText: Diff mode: Changed text within a changed line. |diff.txt|
• EndOfBuffer: Filler lines (~) after the last line in the buffer. By default, this is highlighted like |hl-NonText|.
• ErrorMsg: messages on the command line.
• VertSplit: Column separating vertically split windows.
• Folded: Line used for closed folds.
• FoldColumn: 'foldcolumn'
• SignColumn: Column where |signs| are displayed.
• IncSearch: 'incsearch' highlighting; also used for the text replaced with ":s///c".
• LineNr: Line number for ":number" and ":#" commands, and when 'number' or 'relativenumber' option is set.
• LineNrAbove: Line number for when the 'relativenumber' option is set, above the cursor line.
• LineNrBelow: Line number for when the 'relativenumber' option is set, below the cursor line.
• CursorLineNr: Like LineNr when 'cursorline' is set and 'cursorlineopt' contains "number" or is "both", for the cursor line.
• CursorLineSign: Like SignColumn when 'cursorline' is set for the cursor line.
• CursorLineFold: Like FoldColumn when 'cursorline' is set for the cursor line.
• MatchParen: Character under the cursor or just before it, if it is a paired bracket, and its match. |pi_paren.txt|
• MessageWindow: Messages popup window used when 'cmdheight' is zero. If not defined |hl-WarningMsg| is used.
• ModeMsg: 'showmode' message (e.g., "-- INSERT --").
• MoreMsg: |more-prompt|
• NonText: '@' at the end of the window, "<<<" at the start of the window for 'smoothscroll', characters from 'showbreak' and other characters that do not really exist in the text, such as the ">" displayed when a double-wide character doesn't fit at the end of the line.
• Normal: Normal text.
• Pmenu: Popup menu: Normal item.
• PmenuSel: Popup menu: Selected item.
• PmenuSbar: Popup menu: Scrollbar.
• PmenuThumb: Popup menu: Thumb of the scrollbar.
• PopupNotification: Popup window created with |popup_notification()|. If not defined |hl-WarningMsg| is used.
• Question: |hit-enter| prompt and yes/no questions.
• QuickFixLine: Current |quickfix| item in the quickfix window.
• Search: Last search pattern highlighting (see 'hlsearch'). Also used for similar items that need to stand out.
• CurSearch: Current match for the last search pattern (see 'hlsearch'). Note: This is correct after a search, but may get outdated if changes are made or the screen is redrawn.
• SpecialKey: Meta and special keys listed with ":map", also for text used to show unprintable characters in the text, 'listchars'. Generally: Text that is displayed differently from what it really is.
• SpellBad: Word that is not recognized by the spellchecker. |spell| This will be combined with the highlighting used otherwise.
• SpellCap: Word that should start with a capital. |spell| This will be combined with the highlighting used otherwise.
• SpellLocal: Word that is recognized by the spellchecker as one that is used in another region. |spell| This will be combined with the highlighting used otherwise.
• SpellRare: Word that is recognized by the spellchecker as one that is hardly ever used. |spell| This will be combined with the highlighting used otherwise.
• StatusLine: Status line of current window.
• StatusLineNC: status lines of not-current windows Note: If this is equal to "StatusLine", Vim will use "^^^" in the status line of the current window.
• StatusLineTerm: Status line of current window, if it is a |terminal| window.
• StatusLineTermNC: Status lines of not-current windows that is a |terminal| window.
• TabLine: Tab pages line, not active tab page label.
• TabLineFill: Tab pages line, where there are no labels.
• TabLineSel: Tab pages line, active tab page label.
• Terminal: |terminal| window (see |terminal-size-color|).
• Title: Titles for output from ":set all", ":autocmd" etc.
• Visual: Visual mode selection.
• VisualNOS: Visual mode selection when vim is "Not Owning the Selection". Only X11 Gui's |gui-x11| and |xterm-clipboard| supports this.
• WarningMsg: Warning messages.
• WildMenu: Current match in 'wildmenu' completion.
• User1 - User9: The 'statusline' syntax allows the use of 9 different highlights in the statusline and ruler (via 'rulerformat'). The names are User1 to User9.
• Menu: Current font, background and foreground colors of the menus.
  • GUI only
• Scrollbar: Current background and foreground of the main window's scrollbars. Applicable highlight arguments: guibg, guifg.
  • GUI only
• Tooltip: Current font, background and foreground of the tooltips. Applicable highlight arguments: font, guibg, guifg.
  • GUI only

[Mischback]

Log

1. Define the main colors
   • as this is meant for actual development, let's define the primary colors first
     • #1c1c1c main background color (Normal, bg)
     • #b2b2b2 main foreground color (Normal, fg)
     • #767676 for comments (Comment, fg)
2. Define colors for basic syntax highlighting
   • the default syntax highlighting groups can be shown with :h w18
   • define colors for the primary groups
     • #767676 Comment
     • #ff5f00 Constant
     • #b2b2b2 Identifier
     • #5fafff Statement
     • #af5fd7 PreProc
     • #00af87 Type
     • #ff5f00 Special
     • #b2b2b2 Ignore
     • #af0000 Error
     • #ffd700 Todo
3. Define colors for sub groups
   • still sticking to the default syntax highlighting groups (:h w18)
   • continuously check with actual source code files of your preferred language
     • #87af00 String
     • #5fd700 Character
     • #ff8700 Number, Boolean, Float
     • #ff5f00 Function
     • #af87d7 Define, Macro
     • #5f5fd7 PreCondit
     • #87d7ff StorageClass
     • #949494 Tag, Delimiter