Use thread to ensure consistent colors in contact cells.

SignalMessaging/Views/ContactCellView.m

@@ -129,6 +129,10 @@ const CGFloat kContactCellAvatarTextMargin = 12;
 
     self.recipientId = recipientId;
 
+    [self.primaryStorage.dbReadConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
+        self.thread = [TSContactThread getThreadWithContactId:recipientId transaction:transaction];
+    }];
+
     self.nameLabel.attributedText =
         [self.contactsManager formattedFullNameForRecipientId:recipientId font:self.nameLabel.font];