void	plastic		black
0
0
5	0.047	0.047	0.047	0	0

void	plastic		white
0
0
5	0.87	0.87	0.87	0	0

#	void BRTDfunc water
#	10	refl	refl	refl
#		tran	tran	tran
#		0	0	0
#		fresnel.cal
#	0
#	10
#		0	0	0
#		0	0	0
#		0	0	0
#		1.3

void dielectric water
0
0
5	.98	.98	.99 	1.3 0