Sorry, we do not currently support changing the color of the report charts. We will add your requirement to our future enhancement list.
Please perform the following steps to share the report:
1. Navigate to the Reports section in your Zoho Survey account.
2. Click Share Report in Advanced Options.
3. Create a new share report and give it a name.
4. To share it with a private user, type in the email address in the space provided and click Share. They will receive an email with the link. You can ask them to click the link to view the shared report.
Yes, this is possible. After you send out your survey, and start receiving responses, navigate to the Reports section. You can see the reports for all questions separately here.
Sorry, we currently do not have the option of comparing two different surveys with one another.