nvim-config/lua/plugins/colorscheme.lua

-- Theme/Colorscheme (uncomment section for whichever theme you prefer or use your own)
-- Kanagawa Theme (Custom Palette)
return {
  -- https://github.com/rebelot/kanagawa.nvim
  'rebelot/kanagawa.nvim', -- You can replace this with your favorite colorscheme
  lazy = false, -- We want the colorscheme to load immediately when starting Neovim
  priority = 1000, -- Load the colorscheme before other non-lazy-loaded plugins
  opts = {
    -- Replace this with your scheme-specific settings or remove to use the defaults
    -- transparent = true,
    background = {
      -- light = "lotus",
      dark = "wave", -- "wave, dragon"
    },
    colors = {
      palette = {
        -- Background colors
        sumiInk0 = "#161616", -- modified
        sumiInk1 = "#181818", -- modified
        sumiInk2 = "#1a1a1a", -- modified
        sumiInk3 = "#1F1F1F", -- modified
        sumiInk4 = "#2A2A2A", -- modified
        sumiInk5 = "#363636", -- modified
        sumiInk6 = "#545454", -- modified

        -- Popup and Floats
        waveBlue1 = "#322C47", -- modified
        waveBlue2 = "#4c4464", -- modified

        -- Diff and Git
        winterGreen = "#2B3328",
        winterYellow = "#49443C",
        winterRed = "#43242B",
        winterBlue = "#252535",
        autumnGreen = "#76A56A", -- modified
        autumnRed = "#C34043",
        autumnYellow = "#DCA561",

        -- Diag
        samuraiRed = "#E82424",
        roninYellow = "#FF9E3B",
        waveAqua1 = "#7E9CD8", -- modified
        dragonBlue = "#7FB4CA", -- modified

        -- Foreground and Comments
        oldWhite = "#C8C093",
        fujiWhite = "#F9E7C0", -- modified
        fujiGray = "#727169",
        oniViolet = "#BFA3E6", -- modified
        oniViolet2 = "#BCACDB", -- modified
        crystalBlue = "#8CABFF", -- modified
        springViolet1 = "#938AA9",
        springViolet2 = "#9CABCA",
        springBlue = "#7FC4EF", -- modified
        waveAqua2 = "#77BBDD", -- modified

        springGreen = "#98BB6C",
        boatYellow1 = "#938056",
        boatYellow2 = "#C0A36E",
        carpYellow = "#FFEE99", -- modified

        sakuraPink = "#D27E99",
        waveRed = "#E46876",
        peachRed = "#FF5D62",
        surimiOrange = "#FFAA44", -- modified
        katanaGray = "#717C7C",
      },
    },
  },
  config = function(_, opts)
    require('kanagawa').setup(opts) -- Replace this with your favorite colorscheme
    vim.cmd("colorscheme kanagawa") -- Replace this with your favorite colorscheme

    -- Custom diff colors
    vim.cmd([[
      autocmd VimEnter * hi DiffAdd guifg=#00FF00 guibg=#005500
      autocmd VimEnter * hi DiffDelete guifg=#FF0000 guibg=#550000
      autocmd VimEnter * hi DiffChange guifg=#CCCCCC guibg=#555555
      autocmd VimEnter * hi DiffText guifg=#00FF00 guibg=#005500
    ]])

    -- Custom border colors
    vim.cmd([[
      autocmd ColorScheme * hi NormalFloat guifg=#F9E7C0 guibg=#1F1F1F
      autocmd ColorScheme * hi FloatBorder guifg=#F9E7C0 guibg=#1F1F1F
    ]])
  end
}

-- Kanagawa Theme (Original)
-- return {
--   -- https://github.com/rebelot/kanagawa.nvim
--   'rebelot/kanagawa.nvim', -- You can replace this with your favorite colorscheme
--   lazy = false, -- We want the colorscheme to load immediately when starting Neovim
--   priority = 1000, -- Load the colorscheme before other non-lazy-loaded plugins
--   opts = {
--     -- Replace this with your scheme-specific settings or remove to use the defaults
--     -- transparent = true,
--     background = {
--       -- light = "lotus",
--       dark = "wave", -- "wave, dragon"
--     },
--   },
--   config = function(_, opts)
--     require('kanagawa').setup(opts) -- Replace this with your favorite colorscheme
--     vim.cmd("colorscheme kanagawa") -- Replace this with your favorite colorscheme
--   end
-- }

-- Tokyo Night Theme
-- return {
--   -- https://github.com/folke/tokyonight.nvim
--   'folke/tokyonight.nvim', -- You can replace this with your favorite colorscheme
--   lazy = false, -- We want the colorscheme to load immediately when starting Neovim
--   priority = 1000, -- Load the colorscheme before other non-lazy-loaded plugins
--   opts = {
--     -- Replace this with your scheme-specific settings or remove to use the defaults
--     -- transparent = true,
--     style = "night", -- other variations "storm, night, moon, day"
--   },
--   config = function(_, opts)
--     require('tokyonight').setup(opts) -- Replace this with your favorite colorscheme
--     vim.cmd("colorscheme tokyonight") -- Replace this with your favorite colorscheme
--   end
-- }

-- Catppuccin Theme
-- return {
--   -- https://github.com/catppuccin/nvim
--   'catppuccin/nvim',
--   name = "catppuccin", -- name is needed otherwise plugin shows up as "nvim" due to github URI
--   lazy = false, -- We want the colorscheme to load immediately when starting Neovim
--   priority = 1000, -- Load the colorscheme before other non-lazy-loaded plugins
--   opts = {
--   --   -- Replace this with your scheme-specific settings or remove to use the defaults
--     -- transparent = true,
--     flavour = "mocha", -- "latte, frappe, macchiato, mocha"
--   },
--   config = function(_, opts)
--     require('catppuccin').setup(opts) -- Replace this with your favorite colorscheme
--     vim.cmd("colorscheme catppuccin") -- Replace this with your favorite colorscheme
--   end
-- }

-- Sonokai Theme
-- return {
--   -- https://github.com/sainnhe/sonokai
--   'sainnhe/sonokai',
--   lazy = false, -- We want the colorscheme to load immediately when starting Neovim
--   priority = 1000, -- Load the colorscheme before other non-lazy-loaded plugins
--   config = function(_, opts)
--     vim.g.sonokai_style = "default" -- "default, atlantis, andromeda, shusia, maia, espresso"
--     vim.cmd("colorscheme sonokai") -- Replace this with your favorite colorscheme
--   end
-- }

-- One Nord Theme
-- return {
--   -- https://github.com/rmehri01/onenord.nvim
--   'rmehri01/onenord.nvim',
--   lazy = false, -- We want the colorscheme to load immediately when starting Neovim
--   priority = 1000, -- Load the colorscheme before other non-lazy-loaded plugins
--   config = function(_, opts)
--     vim.cmd("colorscheme onenord") -- Replace this with your favorite colorscheme
--   end
-- }