When creating a new, or editing a Survey, you have the option to customize the Survey. If none of these customizations are applied, this is what you can expect.
By default, the Survey is Blue (hex colour #176BCC). Here is an example of the default blue in the header.
The default text is "Please ensure that your answers are complete, as you will be only able to submit this survey once. Thank you for your time!"
The default text is, "Thank you, your feedback is greatly appreciated"
By default, the Survey has no close time. So the Survey is available indefinitely.