Thank you so much for your time. Exporting without that box checked seems to have solved the problem as all my pics are in color and they uploaded to Create Space successfully from my MacBook. I went from Affinity Designer directly to PDF and am so glad this problem seems to be solved. I just need to check out the previewer to see if there are any problems. I haven't been able to do that yet but hope to tackle it tomorrow. Many thanks!
Madeline got a reaction from Petar Petrenko in Exporting to PDF- losing color