diff --git a/lua/cosmic/core/theme/highlights.lua b/lua/cosmic/core/theme/highlights.lua
index 9110e74..aba8b47 100644
--- a/lua/cosmic/core/theme/highlights.lua
+++ b/lua/cosmic/core/theme/highlights.lua
@@ -3,24 +3,13 @@ local highlight = require('cosmic.utils').highlight
 local M = {}
 
 function M.init()
-  -- diagnostic colors
-  -- sign colors
-  highlight('LspDiagnosticsSignError', 'None', colors.error)
-  highlight('LspDiagnosticsSignWarning', 'None', colors.warn)
-  highlight('LspDiagnosticsSignInformation', 'None', colors.info)
-  highlight('LspDiagnosticsSignHint', 'None', colors.hint)
-
-  --highlight('DiagnosticUnderlineError', 'None', colors.error)
-  --highlight('DiagnosticUnderlineWarning', 'None', colors.warn)
-  --highlight('DiagnosticUnderlineInformation', 'None', colors.info)
-  --highlight('DiagnosticUnderlineHint', 'None', colors.hint)
-
-  -- legacy lsp colors
-  highlight('LspDiagnosticsError', 'None', colors.error)
-  highlight('LspDiagnosticsWarn', 'None', colors.warn)
-  highlight('LspDiagnosticsInfo', 'None', colors.info)
-  highlight('LspDiagnosticsHint', 'None', colors.hint)
+  -- diagnostic virtual text highlights
+  highlight('DiagnosticVirtualTextError', 'None', colors.error)
+  highlight('DiagnosticVirtualTextWarn', 'None', colors.warn)
+  highlight('DiagnosticVirtualTextInfo', 'None', colors.info)
+  highlight('DiagnosticVirtualTextHint', 'None', colors.hint)
 
+  -- diagnostics highlight
   highlight('DiagnosticError', 'None', colors.error)
   highlight('DiagnosticWarn', 'None', colors.warn)
   highlight('DiagnosticInfo', 'None', colors.info)
@@ -28,15 +17,24 @@ function M.init()
 
   highlight('Error', 'None', colors.error)
   highlight('ErrorMsg', 'None', colors.error)
-  highlight('WarningMsg', 'None', colors.error)
+  highlight('WarningMsg', 'None', colors.warn)
+
+  -- legacy diagnostics highlight
+  highlight('LspDiagnosticsError', 'None', colors.error)
+  highlight('LspDiagnosticsWarn', 'None', colors.warn)
+  highlight('LspDiagnosticsInfo', 'None', colors.info)
+  highlight('LspDiagnosticsHint', 'None', colors.hint)
 
   -- signature highlight color
   highlight('LspSignatureActiveParameter', 'None', colors.orange)
 
-  -- currently not working
+  -- currently not working?
   highlight('TelescopeSelectionCaret', 'None', colors.selection_caret)
 
-  -- needs to highlight after lsp start, why? idk
+  -- autocomplete highlights
+  highlight('CmpItemAbbrDeprecated', colors.warn)
+
+  -- todo: needs to highlight after lsp start, why? idk
   vim.cmd([[
     highlight clear NormalFloat
     highlight link NormalFloat Normal
diff --git a/lua/cosmic/pluginsInit.lua b/lua/cosmic/pluginsInit.lua
index 06e4963..31e186f 100644
--- a/lua/cosmic/pluginsInit.lua
+++ b/lua/cosmic/pluginsInit.lua
@@ -80,6 +80,7 @@ return packer.startup(function()
       'hrsh7th/cmp-nvim-lsp',
       'hrsh7th/cmp-buffer',
       'hrsh7th/cmp-path',
+      'hrsh7th/cmp-nvim-lua',
       'hrsh7th/nvim-cmp',
       'L3MON4D3/LuaSnip',
       'saadparwaiz1/cmp_luasnip',