Set the layer mode to "color" this will make your image blak and white.
1	Set	set	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	0:root	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	4:det	_
3	layer	layer	NOUN	NN	Number=Sing	4	compound	4:compound	_
4	mode	mode	NOUN	NN	Number=Sing	1	obj	1:obj	_
5	to	to	ADP	IN	_	7	case	7:case	_
6	"	"	PUNCT	``	_	7	punct	7:punct	SpaceAfter=No
7	color	color	NOUN	NN	Number=Sing	1	obl	1:obl:to	SpaceAfter=No
8	"	"	PUNCT	''	_	7	punct	7:punct	_
9	this	this	PRON	DT	Number=Sing|PronType=Dem	11	nsubj	11:nsubj	_
10	will	will	AUX	MD	VerbForm=Fin	11	aux	11:aux	_
11	make	make	VERB	VB	VerbForm=Inf	1	parataxis	1:parataxis	_
12	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	13	nmod:poss	13:nmod:poss	_
13	image	image	NOUN	NN	Number=Sing	11	obj	11:obj|14:nsubj:xsubj|16:nsubj:xsubj	_
14	blak	blak	ADJ	JJ	Degree=Pos	11	xcomp	11:xcomp	_
15	and	and	CCONJ	CC	_	16	cc	16:cc	_
16	white	white	ADJ	JJ	Degree=Pos	14	conj	11:xcomp|14:conj:and	SpaceAfter=No
17	.	.	PUNCT	.	_	1	punct	1:punct	_
