diff --git a/README.md b/README.md
index ea66e1b..b713528 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@
 | neovim            |      |
 | ripgrep           |      |
 | tmux              |      |
+| [macOS Input Source Manager][macism] | |
 
 
 ```
@@ -57,11 +58,10 @@ Then reload ``.tmux.conf`` (``bind + shift + I`` in tmux) and the plugins specif
 
 [brew]:https://brew.sh/index
 [fisher]:https://github.com/jorgebucaran/fisher
+[macism]:https://github.com/laishulu/macism
 
-## Environment variables
+### Environment Variables
 
-This repository assumes that the following environment variables are set.
-
-| Environemnt variable | Note |
-|----------------------|------|
-| MANDAIY_ORG_NOTE_DIR | Directory where org-note repository resides |
+| Variable | Description |
+|----------|-------------|
+| `NVIM_PYTHON_PATH` | Path to Python interpreter to be used in neovim |
diff --git a/nvim/init.lua b/nvim/init.lua
index 42bb389..b758a83 100644
--- a/nvim/init.lua
+++ b/nvim/init.lua
@@ -130,6 +130,10 @@ vim.opt.wildmode = "list:full" -- Command completion
 vim.opt.wrap = false
 vim.opt.writebackup = false
 
+vim.opt.termguicolors = true
+vim.opt.winblend = 0
+vim.opt.pumblend = 0
+
 -- %<: truncation position
 -- %n: buffer number, %m: modified?
 -- %r: RO?, %h: help buffer?
@@ -226,14 +230,22 @@ end, { expr = true })
 
 -- Enable editorconfig
 vim.g.editorconfig = true
+
 -- Disable python2 support.
 vim.g.loaded_python_provider = 0
 
-if vim.fn.isdirectory(vim.env.XDG_CONFIG_HOME .. "/nvim/venv/") then
-   vim.g.python3_host_prog = vim.env.XDG_CONFIG_HOME .. "/nvim/venv/bin/python"
-   vim.g.black_virtualenv = vim.env.XDG_CONFIG_HOME .. "/nvim/venv"
+local nvim_python_path = vim.loop.os_getenv("NVIM_PYTHON_PATH")
+local XDG_CONFIG_HOME = vim.loop.os_getenv("XDG_CONFIG_HOME") or ""
+if nvim_python_path ~= nil then
+   vim.g.python3_host_prog = nvim_python_path
+elseif vim.fn.isdirectory(XDG_CONFIG_HOME .. "/nvim/venv/") then
+   vim.g.python3_host_prog = XDG_CONFIG_HOME .. "/nvim/venv/bin/python"
 end
 
+-- Example for configuring Neovim to load user-installed installed Lua rocks:
+package.path = package.path .. ";" .. vim.fn.expand("$HOME") .. "/.luarocks/share/lua/5.1/?/init.lua;"
+package.path = package.path .. ";" .. vim.fn.expand("$HOME") .. "/.luarocks/share/lua/5.1/?.lua;"
+
 -- lazy bootstrap
 local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
 if not vim.loop.fs_stat(lazypath) then
diff --git a/nvim/lua/plugins.lua b/nvim/lua/plugins.lua
index e511a7c..400956b 100644
--- a/nvim/lua/plugins.lua
+++ b/nvim/lua/plugins.lua
@@ -4,6 +4,15 @@ return {
       lazy = false, -- make sure we load this during startup if it is your main colorscheme
       priority = 1000, -- make sure to load this before all the other start plugins
       config = function()
+         require("tokyonight").setup({
+            style = "storm",
+            transparent = true,
+            styles = {
+               sidebars = "transparent",
+               floats = "transparent",
+            },
+         })
+
          -- load the colorscheme here
          vim.cmd([[colorscheme tokyonight]])
       end,
diff --git a/tmux/tmux.conf b/tmux/tmux.conf
index fbe4549..2074e0a 100644
--- a/tmux/tmux.conf
+++ b/tmux/tmux.conf
@@ -56,4 +56,6 @@ set -g @plugin 'seebi/tmux-colors-solarized'
 
 set -g @yank_action 'copy-pipe'
 
+set -gq allow-passthrough on
+
 run '$XDG_CONFIG_HOME/tmux/plugins/tpm/tpm'