Okay, here's Amazon's white color vs cream for hardcovers. What do you think? (I almost like white better  ). Would it matter to you as a reader if color paper doesn't match in series? And which color type do you prefer?

As a reader, I prefer white. The greater contrast with black type is easier for me to read.

Beltane in ancient Celtic lore represents celebrating Spring--like Easter for witches.

This is a co-author romance promo including higher heat levels, no erotica. I encourage fantasy and paranormal, because that's my genre, but note that this promotion celebrates all romance. Full books only. All price points welcome. Boxed sets and anthologies are welcome. New writers to Bookfunnel are welcome. Come join me while I promote all my new witchy books I'm publishing in May.

HERE IS THE LINK TO JOIN: https://dashboard.bookfunnel.com/bundles/board/ei0zgl6won
(again, love to see all you Writer Sanctum writers there )

If it's going to bother you, it probably is worth unpublishing and republishing. It's odd that paper color would be a thing that can't be changed because of the ISBN.

I'll see. I'm still waiting for the book in the mail to visually compare them. When it comes in, I can show you a photo comparing the prose on white vs cream. That may be handy for those deciding on one vs another. I'll figure out whether to republish if there's a big enough difference.

Having any luck selling hardcovers?

It's a novelty item. It's kind of like my omnibus 3-book paperback. Both sell about just as much: one every six months or so. I use them from time to time for signed copies for readers. Also my newest cover artist doesn't charge much to give me an alternate hardcover, so... why not, I suppose?   

Now booking for May and June!

People have differing opinions about paper color, just as they have about matte covers versus glossy. And some people will not notice or care. For your own satisfaction, you'll probably want to redo the book.

Which reminds me that a friend who died last month had bought 100 ISBNs when she retired. I don't know that she got a chance to use even half of them, and now I'm not sure anyone can since they were bought in her name and no other name can be attached to them. The U.S. ISBN system is a swindle as it applies to individual authors.