This is the older PLL "LOT" livery, introduced in the 80's - it lasted to the mid 2010's and it was in fact considered that the first 787's in the fleet will carry these colours too. Instead a new, cleaner livery was introduced before they entered service. So yes, it's fictional, but sure looks good on the 787-10. Hope you like it too.

Patch 5 compatible, custom thumbnail