Changes 3D display toolpath color.
(color) (color=rgb)
G17 G21 G90 G91.1 G94 G00 X0 Y0 (color=0xFF0000) G01 X30 Y30 G03 X0 Y30 I-15 G03 X-30 Y30 I-15 G01 X0 Y0 (color)