They look like the Kaffe Fassett Shot cottons. On googling they seem very similar. I found this link produced by Pepper Cory on how to care/wash the fabrics. Oh Mass drop I am trying to decide if I can spend more money and get the Tula Eden and now you offer these too!!! After after just joining the Passagalia quilt drop too it is all too much! So glad I found Massdrop, but I need more willpower :)
https://vw-studioefabrics.storage.googleapis.com/uploads/2013/07/18/files/Rough_cut_Peppered_Cottons_work_sheet_2_1.pdf