You may, however, want to blend the colors using either the wet or dry brush method (fig 3-12).
(a) Wet brush - Lay the two values to be blended, side by side. Slightly overlap
them on the paper. Wet the brush in a clear carrier and move it back and forth over the two
values. The brush will mix the two values together creating an in-between value (fig 3-12).
(b) Dry brush - Paint the two values slightly overlapping the other, creating a
definite separating line between them. On the palette, mix a gray tone, half way between the two
values. Pick up a small portion of the gray tone with the tip ends of your brush and blend over
the middle of the two values (fig 3-13).