The lightest pigmented recessive blue painted can be either Bb or Bb1 based. There is also a much darker version that is (BB) based called grizzled recessive blue painted.
1. (Bb cmc slsl), Heterozygous black/bronze base (Bb) with one copy each of mottling (cm) and white (c), then homozygous for recessive slate (slsl).
Breeding results are: Recessive blue painted, grizzled recessive blue painted, recessive blue tuxedo, barred recessive blue tuxedo, mottled recessive slate, recessive blue fawn and white.
2. (Bb' cmc slsl), Heterozygous black/black-winged bronze base (Bb') with one copy each of mottling (cm) and white (c), then homozygous for recessive slate (slsl).
Breeding results are: Recessive blue painted, grizzled recessive blue painted, recessive blue tuxedo, mottled recessive blue tuxedo, mottled blue-winged recessive slate, white-winged recessive blue fawn, and white.
Recessive Blue Painted Poult at hatch