fdo#80054 change color for NPC to "solarized blue"

Change-Id: I4ee3d2422982d37be3638b9647096e0b38314d56
Reviewed-on: https://gerrit.libreoffice.org/10327
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
Reviewed-by: Joren De Cuyper <jorendc@libreoffice.org>
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>