colors connected by lines on this chart will tone down each other and,
if mixed in proper proportions, will result in gray.

It is probable that any straw which has been dyed too brilliant, can be
closely matched to one of the colors given on Plate III. Consequently
its complement can be determined and, by experimentation, the brilliant
color toned down. Usually only an exceedingly small amount of its
complement is needed to tone down a given color.

Color Combination.

In general, too many different colors appear in the Philippine mats,
and most of these are brilliant. It is often true that a large
amount of a given brilliant color is offensive to the eye, and yet
the addition of a little of it greatly enhances the beauty of the
mat. Often color combinations are not harmonious. Particularly
bad effects are obtained with red-violet and yellow or
yellow-orange. Red-violet with blue-green is another unfortunate
combination.

Certain rules have been set down for combination of colors: (1) A given
color with its tints and shades [5] may always be safely combined;
(2) complementary colors may always be safely combined; (3) the tints
and shades of complementary colors may always be safely combined;
(4) any three colors occurring in sequence on the color chart may be
combined in that sequence.

The following notes on the use and combination of the colored straws
from Tanay, Rizal, and from Romblon, and those shown on the charts
accompanying the dyes of Leopold Cassela & Co., are given. The figures
refer to the numbers given the colored straws on these charts. These
dyes were evolved for the Bureau of Education especially for Philippine
mat straws and will soon be available in the market. The notes have
been prepared in accordance with the rules above outlined, and, if
they are followed closely, no unfortunate color combination can result.

Colors Obtained from the New Dyes.

The sample straws on these charts are made with the following
dyestuffs:

Colors. Numbers Dyestuffs.
on chart.

Yellow Yellow-Orange No. 1 Paraphosphine G.
Violet No. 2 Methylviolett BB 72 No. 1.
Brown No. 3 Rush Brown B.
Orange Red-Red No. 4 Rush Red S A.
Yellow-Green No. 5 Rush Green T B.
Blue-Violet No. 6 New Methylene Blue R.
Red-Violet