startshape fig2 background { b -1}

rule fig2 {

fig1 { flip 40 }
fig1 { flip -90}
fig2 { r 20 s .9}

}

rule fig1 {

TRIANGLE { a -.55 hue 1}
fig1 { s .85 r 17 x .5 hue 10 sat 1 b .1}

}