White is the better default for a coloring book: the same 50–61 pound (74–90 GSM) paper weight is available in both colors, but white gives higher contrast for black line art, and it doesn't cost more — KDP groups white and cream under the same printing-cost table for black-ink books. The real trade-off is spine width: cream paper is physically thicker at 0.0025 in per page, against 0.002252 in per page for white, so the same interior page count produces a slightly wider spine on cream.
What actually differs between the two
| White | Cream | |
|---|---|---|
| Paper weight | 50-61 lb (74-90 GSM) | 50-61 lb (74-90 GSM) — same range |
| Printing cost | Same cost table as cream for black-ink books | Same cost table as white |
| Spine thickness per page | 0.002252 in | 0.0025 in |
| Line contrast | Higher against pure white | Slightly lower against an off-white ground |
| Switchable after publishing | Yes | Yes |
The paper weight and printing cost rows are identical between the two — the only KDP-documented physical difference is spine thickness per page.
Why white suits a coloring book specifically
A coloring page is black line art meant to be colored inside — contrast between the printed line and the page it sits on matters more here than in a page of running text, where cream's slightly warmer tone is often chosen to reduce eye strain over long reading sessions. That reading-comfort argument for cream doesn't carry the same weight for a coloring book, where the buyer is coloring inside lines rather than reading paragraphs, and higher line-to-page contrast makes the boundary easier to see and stay inside of, especially for younger colorers with less fine motor control.
Why the spine difference matters more with page count
Because cream paper measures thicker per sheet, a book with more interior pages accumulates a larger spine-width difference between the two paper choices — negligible at a low page count, more noticeable at a high one. This interacts with the spine-text minimum (KDP prints spine text only past 79 pages): a book sitting right at that line could clear it on cream's thicker spine while falling just short on white's thinner one, or vice versa depending on the exact count. See the page-count-and-spine guide for the full spine-width formula.
Why the cost argument doesn't favor either one
Some authors assume one paper color is cheaper because it's marketed as a premium option elsewhere in publishing — that's not the case here. KDP's printing-cost guidance for black-ink paperbacks presents cream and white together under one cost table, meaning the choice between them doesn't move the printing cost or, by extension, the royalty math. Pricing a book doesn't need to factor in a paper-color cost difference, because there isn't one.
Making the switch later
KDP's print options guidance lists white-to-cream and cream-to-white as a supported conversion for a black-and-white book already published, so choosing white now doesn't lock a title in permanently if a later redesign calls for cream. Because CrayonMill's interior file doesn't depend on paper color at all — page content is generated the same way regardless — switching paper color for an existing book is a KDP-side setting change, not a reason to regenerate anything.
Sources
Last verified 2026-09-04. Updated 2026-09-04.