55 COLOR IN THE SCHOOL-ROOM. Fig. 4. Fig. 5. standards, as for illustration, if we wish to obtain a shade of the green-yellow already mentioned we add a black disk to the green and yellow disks. Fig. 6 shows two colored disks with a small graduated scale, which is sometimes more convenient to use… … Fig. 6. Fig. 7. In forming combinations of two colors it is often desirable to have a constant comparison of the new color w^ith one of the standards, and Fig. 7 shows two color disks, as, for ex- ample, the green and the yellow with the large graduated scale, as in Fig. 4, and in addition a large…
Color -- Psychological aspects · Color -- Study and teaching
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