feat: add options light_style (#231)

* feat: add options light_style

* add default and docs for light_style

Author: wangl-cc

README.md

@@ -134,6 +134,7 @@ require("tokyonight").setup({
   -- your configuration comes here
   -- or leave it empty to use the default settings
   style = "storm", -- The theme comes in three styles, `storm`, `moon`, a darker variant `night` and `day`
+  light_style = "day", -- The theme is used when the background is set to light
   transparent = false, -- Enable this to disable setting the background color
   terminal_colors = true, -- Configure the colors used when opening a `:terminal` in Neovim
   styles = {

lua/tokyonight/colors.lua

@@ -99,7 +99,8 @@ function M.setup(opts)
   opts = opts or {}
   local config = require("tokyonight.config")
 
-  local palette = M[config.options.style] or {}
+  local style = config.is_day() and config.options.light_style or config.options.style
+  local palette = M[style] or {}
   if type(palette) == "function" then
     palette = palette()
   end

lua/tokyonight/config.lua

@@ -5,6 +5,7 @@ local M = {}
 ---@field on_highlights fun(highlights: Highlights, colors: ColorScheme)
 local defaults = {
   style = "storm", -- The theme comes in three styles, `storm`, a darker variant `night` and `day`
+  light_style = "day", -- The theme is used when the background is set to light
   transparent = false, -- Enable this to disable setting the background color
   terminal_colors = true, -- Configure the colors used when opening a `:terminal` in Neovim
   styles = {