diff --git a/zxlive/eitem.py b/zxlive/eitem.py
index 8a89ab8..df0420b 100644
--- a/zxlive/eitem.py
+++ b/zxlive/eitem.py
@@ -248,7 +248,7 @@ def __init__(self, item: Union[EItem, ET], property: EItem.Properties,
     @property
     def it(self) -> EItem:
         if self._it is None and self.scene is not None and self.e is not None:
-            self._it = self.scene.edge_map[self.e]
+            self._it = self.scene.edge_map[self.e][0]
         assert self._it is not None
         return self._it
 
diff --git a/zxlive/settings.py b/zxlive/settings.py
index 549c995..e5ffff7 100644
--- a/zxlive/settings.py
+++ b/zxlive/settings.py
@@ -112,7 +112,8 @@ class ColorScheme(TypedDict):
     "outline": QColor("#000000"),
 }
 
-classic_red_green: ColorScheme = modern_red_green | {
+classic_red_green: ColorScheme = {
+    **modern_red_green,
     "id": "classic-red-green",
     "label": "Classic Red & Green",
     "z_spider": QColor("#00ff00"),
@@ -121,7 +122,8 @@ class ColorScheme(TypedDict):
     "x_spider_pressed": QColor("#dd0b00"),
 }
 
-white_gray: ColorScheme = modern_red_green | {
+white_gray: ColorScheme = {
+    **modern_red_green,
     "id": 'white-grey',
     "label": "Dodo book White & Grey",
     "z_spider": QColor("#ffffff"),
@@ -132,7 +134,8 @@ class ColorScheme(TypedDict):
     "hadamard_pressed": QColor("#dddddd"),
 }
 
-gidney: ColorScheme = white_gray | {
+gidney: ColorScheme = {
+    **white_gray,
     "id": 'gidney',
     "label": "Gidney's Black & White",
     "z_spider": QColor("#000000"),
diff --git a/zxlive/tikz.py b/zxlive/tikz.py
index 538d65d..624841c 100644
--- a/zxlive/tikz.py
+++ b/zxlive/tikz.py
@@ -1,7 +1,7 @@
 from PySide6.QtCore import QSettings
 from pyzx.tikz import TIKZ_BASE, _to_tikz
 
-from .common import get_settings_value
+from .common import GraphT, get_settings_value
 from zxlive.proof import ProofModel
 
 
@@ -23,7 +23,9 @@ def proof_to_tikz(proof: ProofModel) -> str:
 
         # Translate graph so that the first vertex starts at 0
         min_x = min(g.row(v) for v in g.vertices())
-        g = g.translate(-min_x, 0)
+        g_t = g.translate(-min_x, 0)
+        assert isinstance(g_t, GraphT)
+        g = g_t
 
         if i > 0:
             rewrite = proof.steps[i-1]
diff --git a/zxlive/vitem.py b/zxlive/vitem.py
index c261939..c9bfa07 100644
--- a/zxlive/vitem.py
+++ b/zxlive/vitem.py
@@ -140,12 +140,12 @@ def refresh(self) -> None:
         pen = QPen()
         if not self.isSelected():
             color_key = color_map.get(self.ty, "boundary")
-            brush = QBrush(display_setting.colors[color_key])
+            brush = QBrush(display_setting.colors[color_key]) # type: ignore # https://github.com/python/mypy/issues/7178
             pen.setWidthF(3)
             pen.setColor(display_setting.colors["outline"])
         else:
             color_key = pressed_color_map.get(self.ty, "boundary_pressed")
-            brush = QBrush(display_setting.colors[color_key])
+            brush = QBrush(display_setting.colors[color_key]) # type: ignore # https://github.com/python/mypy/issues/7178
             brush.setStyle(Qt.BrushStyle.Dense1Pattern)
             pen.setWidthF(5)
             if self.ty not in pressed_color_map: