So many questions about DALL-E 2

Like many of you, I’m settling in for a long wait for DALL-E 2, but in the meantime I’d like to live vicariously through a few who have access. I’ve been looking for some hands-on video on YouTube, but haven’t found anything yet.

Here are a few of the questions I’m curious about (apologies if this info is already available somewhere):

Are those five colored squares at the bottom some sort of watermark?

Do the terms of use require them to be included (didn’t see anything explicit in the Content Policy beyond ‘disclose the use of AI’)?

Do the five colors have any significance?

How long does it take to generate an image?

Any idea what the cost will be be to generate an image? Is there a per-token rate like GPT-3?