Initial theme scaffolding

colors/sumi-e-dark.lua

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+vim.o.background = "dark"
+require("sumi-e").colorscheme()

colors/sumi-e-light.lua

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+vim.o.background = "light"
+require("sumi-e").colorscheme()

colors/sumi-e.lua

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+require("sumi-e").colorscheme()

lua/sumi-e/colors.lua

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+local colors = {
+	white = "#ffffff",
+	black = "#000000",
+	gray500 = "#7f7f7f",
+}
+
+function _colors_dark()
+	colors.bg = "#11171d"
+	colors.fg = "#e3e0cd"
+	colors.string = colors.gray500
+	colors.comment = colors.gray500
+end
+
+function _colors_light()
+	colors.bg = "#ffffff"
+	colors.fg = "#000000"
+end
+
+function colors.generate()
+	if vim.o.background == "dark" then
+		_colors_dark()
+	else
+		_colors_light()
+	end
+end
+
+return colors

lua/sumi-e/config.lua

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+local config = {
+	defaults = {
+		overrides = {},
+	},
+}
+
+setmetatable(config, { __index = config.defaults })
+
+return config

lua/sumi-e/init.lua

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+local colors = require("sumi-e.colors")
+local config = require("sumi-e.config")
+local sumi = {}
+
+local function set_groups()
+	local groups = {
+		Normal = { fg = colors.fg, bg = colors.bg },
+		NormalFloat = { bg = colors.bg },
+		String = { fg = colors.string, italic = true },
+		Comment = { fg = colors.comment, bold = true, italic = true },
+	}
+
+	groups =
+		vim.tbl_extend("force", groups, type(config.overrides) == "function" and config.overrides() or config.overrides)
+
+	for group, parameters in pairs(groups) do
+		vim.api.nvim_set_hl(0, group, parameters)
+	end
+end
+
+--- Apply user settings.
+---@param values table
+function sumi.setup(values)
+	setmetatable(config, { __index = vim.tbl_extend("force", config.defaults, values) })
+end
+
+--- Set the colorscheme.
+function sumi.colorscheme()
+	if vim.version().minor < 8 then
+		vim.notify(
+			"Neovim 0.8+ is required for sumi-e colorscheme",
+			vim.log.levels.ERROR,
+			{ title = "Sumi-e colorscheme" }
+		)
+		return
+	end
+
+	vim.api.nvim_command("hi clear")
+	if vim.fn.exists("syntax_on") then
+		vim.api.nvim_command("syntax reset")
+	end
+
+	vim.g.VM_theme_set_by_colorscheme = true -- Required for Visual Multi
+	vim.o.termguicolors = true
+	vim.g.colors_name = "sumi-e"
+
+	colors.generate()
+	set_groups()
+end
+
+return sumi