Fix: GitSigns background does not match the rest of the gutter

nvim/dot-config/nvim/lua/plugins/lsp.lua

@@ -47,8 +47,9 @@ return {
 			Info = diagnostic.info,
 		}
 		for type, icon in pairs(signs) do
-			local hl = "DiagnosticSign" .. type
-			vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
+			local hl_sign = "DiagnosticSign" .. type
+			local hl_text = "Diagnostic" .. type
+			vim.fn.sign_define(hl_sign, { text = icon, texthl = hl_sign, numhl = hl_text })
 		end
 
 		vim.api.nvim_create_autocmd("LspAttach", {

nvim/dot-config/nvim/lua/themes/gruvbox.lua

@@ -40,6 +40,9 @@ return {
 				TodoCommentHint = { fg = palette.bright_aqua },
 				TodoCommentTest = { fg = palette.bright_purple },
 				TodoCommentDefault = { fg = palette.bright_blue },
+				GitSignsAdd = { link = "GruvboxGreenSign" },
+				GitSignsChange = { link = "GruvboxAquaSign" },
+				GitSignsDelete = { link = "GruvboxRedSign" },
 			},
 		})