First of all,
the pentacle has been forged with very clear writing.
Even after consecrating it with a natural auraspray,
(https://degroenelinde.nl/producten/geurlijnen/5d-light-frequenciesJ
The colours stay true and the lettering readable.
One should always consult an astronomical calender to compute sunrise, sun at peak and sunset and other metaphysical statistics to fully utilise the energies of the sun for positive use of invisibility.
And invisibility can work both ways,
if one wishes
1) indeed it can make you less obvious to the perceiving eye of the outside world,
Or
2) you'll gain insight that less obvious 'invisible" things around yourself do exist
Or
3) if following the true intent of the versicle: you'll gain appreciation & acceptance in the wonders of creation of those visible and invisible working energies as which you can gain insight into positive soul development