diff --git a/lua/specs/init.lua b/lua/specs/init.lua
index 4857275..d3dad3b 100644
--- a/lua/specs/init.lua
+++ b/lua/specs/init.lua
@@ -40,33 +40,56 @@ function M.should_show_specs(start_win_id)
     return true
 end
 
-function M.show_specs()
+function M.show_specs(popup)
     local start_win_id = vim.api.nvim_get_current_win()
 
     if not M.should_show_specs(start_win_id) then
         return
     end
 
+    local function dcopy (t) 
+      local orig_type = type(orig)
+      local copy
+      if orig_type == 'table' then
+        copy = {}
+        for orig_key, orig_value in next, orig, nil do
+          copy[deepcopy(orig_key)] = deepcopy(orig_value)
+        end
+        setmetatable(copy, deepcopy(getmetatable(orig)))
+      else -- number, string, boolean, etc
+        copy = orig
+      end
+      return copy
+    end
+
+    if popup == nil then
+      popup = opts.popup
+    end
+
+    local originalOptions = deep_copy(opts)
+    local instanceOptions = deep_copy(opts)
+    instanceOptions.popup = popup
+
     local cursor_col = vim.fn.wincol()-1
     local cursor_row = vim.fn.winline()-1
     local bufh = vim.api.nvim_create_buf(false, true)
     local win_id = vim.api.nvim_open_win(bufh, false, {
-        relative='win',
+        relative= 'win',
         width = 1,
         height = 1,
         col = cursor_col,
         row = cursor_row,
         style = 'minimal'
     })
-    vim.api.nvim_win_set_option(win_id, 'winhl', 'Normal:'.. opts.popup.winhl)
-    vim.api.nvim_win_set_option(win_id, "winblend", opts.popup.blend)
+    vim.api.nvim_win_set_option(win_id, 'winhl', 'Normal:'.. instanceOptions.popup.winhl)
+    vim.api.nvim_win_set_option(win_id, "winblend", instanceOptions.popup.blend)
 
     local cnt = 0
     local config = vim.api.nvim_win_get_config(win_id)
     local timer = vim.loop.new_timer()
     local closed = false
 
-    vim.loop.timer_start(timer, opts.popup.delay_ms, opts.popup.inc_ms, vim.schedule_wrap(function()
+    vim.loop.timer_start(timer, instanceOptions.popup.delay_ms, instanceOptions.popup.inc_ms, vim.schedule_wrap(function()
         if closed or vim.api.nvim_get_current_win() ~= start_win_id then
             if not closed then
                 pcall(vim.loop.close, timer)
@@ -75,14 +98,15 @@ function M.show_specs()
                 -- Callbacks might stack up before the timer actually gets closed, track that state
                 -- internally here instead
                 closed = true
+                opts = originalOptions
             end
 
             return
         end
 
         if vim.api.nvim_win_is_valid(win_id) then
-            local bl = opts.popup.fader(opts.popup.blend, cnt)
-            local dm = opts.popup.resizer(opts.popup.width, cursor_col, cnt)
+            local bl = instanceOptions.popup.fader(instanceOptions.popup.blend, cnt)
+            local dm = instanceOptions.popup.resizer(instanceOptions.popup.width, cursor_col, cnt)
 
             if bl ~= nil then
                 vim.api.nvim_win_set_option(win_id, "winblend", bl)