fix: Image and horizontal highlight on selected

app/components/Editor/Embed.js

@@ -49,5 +49,5 @@ const Container = styled.div`
 
   border-radius: 3px;
   box-shadow: ${props =>
-    props.isSelected ? `0 0 0 2px ${props.theme.primary}` : 'none'};
+    props.isSelected ? `0 0 0 2px ${props.theme.selected}` : 'none'};
 `;

shared/styles/theme.js

@@ -49,6 +49,7 @@ export const base = {
   backgroundTransition: 'background 100ms ease-in-out',
   zIndex: 100,
 
+  selected: colors.primary,
   buttonBackground: colors.primary,
   buttonText: colors.white,
 };