https://www.amazon.com/Gibelle-Eucalyptus-Watercolor-Bathroom-Waterproof/dp/B0B58QJVSR/ref=mp_s_a_1_10_sspa?crid=1D9JQ1JX25WE3&keywords=shower+curtain&qid=1688240349&sprefix=shower%2Caps%2C193&sr=8-10-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfbXRm&psc=1

Something like this would look nice with your color palate.

You could maybe pick out one of the colors in the curtain for towels/bath mats, maybe another color for some decorative accessories.