fix(themes): tokyonight floatterm border color

lua/cosmic/core/theme/highlights.lua

@@ -64,4 +64,7 @@ highlight clear NormalFloat
 highlight link NormalFloat Normal
 ]])
 
-vim.o.background = 'dark'
+local config = require('cosmic.config')
+if config.theme == 'gruvbox.nvim' then
+  vim.o.background = 'dark'
+end

lua/cosmic/pluginsInit.lua

@@ -65,7 +65,6 @@ return packer.startup(function()
     'ellisonleao/gruvbox.nvim',
     requires = { 'rktjmp/lush.nvim' },
     config = function()
-      vim.o.background = 'dark'
       vim.cmd([[colorscheme gruvbox]])
     end,
     disable = config.theme ~= 'gruvbox.nvim',