ref_scope_prohibit_color

[0-255], [0-255], [0-255]

set the default color of prohibited external references by providing three rgb values. the three decimal values in the range from 0 through 255 specify the level of red, green, and blue (in this order) in the resulting color. click tools > assembly settings > reference control to control the settings of external references when using top-down design tools such as skeletons, copy geometry and publish geometry.