They are fun / nice-colors to use, but be aware that your writing can disappear over time.
A friend has journals a few years old and on the right 2/3rds of the pages the writing is nearly gone (theory being maybe that side got warmer, but not certain)
A friend has journals a few years old and on the right 2/3rds of the pages the writing is nearly gone (theory being maybe that side got warmer, but not certain)