The one baby quilt I saw and most want to make is black and white with the words: eat. sleep. repeat. appliqued on it in a deep red/fuschia. When I asked my New Orleans-located DS what colors would be appropriate, planning ahead just in case they decide on having children, he said "purple, green and gold of course!" (Mardi gras colors.)
Is the teacher a cutesy-wootsy kind of person? If not, the poem probably would not be the most pleasing choice to her, and might best be put on a plaque rather than a quilt. (And if the baby happened to be born physically challenged, the poem on a quilt would mean the end of that quilt!)
If the room moms are dead set against primary colors, what DO they want? Would they agree to different hues of the primaries as another commenter suggested? Or to include the secondaries?