  Non-minimal interactions in the pp-wave Einstein - Yang - Mills - Higgs
(EYMH) model are shown to give rise to color cross-effects analogous to the
magneto-electricity in the Maxwell theory. In order to illustrate the
significance of these color cross-effects, we reconstruct the effective
(associated, color and color-acoustic) metrics for the pp-wave non-minimal
seven-parameter EYMH model with parallel gauge and scalar background fields.
Then these metrics are used as hints for obtaining explicit exact solutions of
the non-minimally extended Yang-Mills and Higgs equations for the test fields
propagating in the vacuum interacting with curvature. The influence of the
non-minimal coupling on the test particle motion is interpreted in terms of the
so-called trapped surfaces, introduced in the Analog Gravity theory.
