startshape fig3 background { b -1} rule fig3 {

fig2 { }
fig2 { flip -90}
fig3 { r 45 x -.75 y -2 s .9 hue 20}

} rule fig2 {

fig1 { }
fig1 { flip -90}
fig2 { r 20 s .9 hue 0}

} rule fig1 {

TRIANGLE { a -.55 hue 2 sat 1}
fig1 { s .94 r 17 x .5 hue 0.1 b .03}

}