On a white frame it may be possible to lug line with a "Staedtler" permanent marker?
https://www.rymanbusiness.com/staed...MIlevTrZu-6wIVjN_tCh1zTgNcEAYYAyABEgJ-DvD_BwE
https://www.rymanbusiness.com/staed...MIlevTrZu-6wIVjN_tCh1zTgNcEAYYAyABEgJ-DvD_BwE