diff --git a/pozo/drawable.py b/pozo/drawable.py
index 0f4d8d2c..3f90f5d9 100644
--- a/pozo/drawable.py
+++ b/pozo/drawable.py
@@ -12,7 +12,7 @@
 
 class VersionedProperty:
     def __set_name__(self, owner, name):
-        if type(owner) == str(Drawable):
+        if not issubclass(owner, Drawable):
             raise AttributeError(f"{name} must be a member of a class inheriting pozo.drawable.Drawable, not {owner}. Is type {type(owner)}.")
         self._private_name = "_" + name
         self._name = name
diff --git a/pozo/themes/__init__.py b/pozo/themes/__init__.py
index ad4560dc..b9fea8ff 100644
--- a/pozo/themes/__init__.py
+++ b/pozo/themes/__init__.py
@@ -1,8 +1,11 @@
 import copy
-import colour
 import json
-from IPython.display import display, HTML
+
+import colour
+from IPython.display import HTML, display
+
 import pozo.themes.mnemonic_tables as tables
+from pozo.themes.theme_tools import ColorWheel, MnemonicDictionary, default_theme
 
 ThemeValues = dict(color="Can be a single color value or list of color values from colour package",
                    track_width="A number in pixels",
@@ -108,7 +111,6 @@ def get_theme(self):
         return self._get_theme()
 
 # Above are inheritables
-from pozo.themes.theme_tools import * # should it be relative?
 # Below is implementations
 themes = {'cangrejo': MnemonicDictionary(tables.cangrejo)}
 cangrejo = MnemonicDictionary(tables.cangrejo)
diff --git a/pozo/themes/mnemonic_tables.py b/pozo/themes/mnemonic_tables.py
index c1e88efb..a9433bb7 100644
--- a/pozo/themes/mnemonic_tables.py
+++ b/pozo/themes/mnemonic_tables.py
@@ -32,18 +32,6 @@
         "scale": "log",
         "range_unit":  "ohm * meter",
     },
-    "LLD" : {
-        "color" : "red",
-        "range": [0.2, 2000],
-        "scale": "log",
-        "range_unit":  "ohm * meter",
-    },
-    "LLD" : {
-        "color" : "red",
-        "range": [0.2, 2000],
-        "scale": "log",
-        "range_unit":  "ohm * meter",
-    },
     "LLD" : {
         "color" : "red",
         "range": [0.2, 2000],