From left to right, row by row:

COLOUR

BW

COLOUR

COLOUR

BW

BW

BW

COLOUR

COLOUR

COLOUR

BW

BW

Look at:

1.

any colour picture

2.

move left or right to nearest black white

3.

move up or down to nearest colour

4.

move diagonally to black white

5.

move left or right to nearest colour… and settle on that

Alternative: Stack a deck of playing cards (C=Colour; B=Black):

1.

C

2.

B

3.

C

4.

C

5.

B

6.

B

7.

B

8.

C

9.

C

10.

C

11.

B

12.

B