Afaik there is no favorite or "Wishlist" for motifs available but this could help you:
https://www.esoui.com/downloads/info...Runeboxes.html
And in addition maybe FCOItemSaver for marker icons. You could define your own marker icons like "Favorite 1" to "Favorite n" and apply them to the style pages you loot. The next time you loot the same it will auto show the same marker icon. But this will only help if you favorite the motif pages on several characters, and you need to loot them first to add them the marker icon.