Use onehalf colourscheme instead

Enable mouse support

init.vim

@@ -15,6 +15,7 @@ call plug#begin()
 
 Plug 'neovim/nvim-lspconfig'
 Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}
+Plug 'sonph/onehalf', {'rtp': 'vim/'}
 Plug 'joshdick/onedark.vim'
 Plug 'mileszs/ack.vim'
 Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
@@ -33,6 +34,7 @@ Plug 'christoomey/vim-tmux-navigator'
 " Initialize plugin system
 call plug#end()
 
+set mouse=nv
 let g:python3_host_prog = '~/.pyenv/versions/base/bin/python'
 
 lua << EOF
@@ -92,7 +94,8 @@ endif
 if exists('+termguicolors') && ($COLORTERM == "24bit" || $COLORTERM == "truecolor")
   set termguicolors
 endif
-colorscheme onedark
+colorscheme onehalfdark
+let g:airline_theme='onehalfdark'
 
 set cursorline
 let mapleader=","