(GOOGLE EARTH) Line Colors Not Appearing Correctly on KMZ (KML) export

When exporting my dgn to a kmz file, everything seems to be exporting on the correct levels etc, except some elements are not maintaining their color. The first image is of the kmz as it appears in google earth, and the second image is of the dgn as it appears in MicroStation V8i. The green lines, along with a few others, in Microstation are appearing as white lines on google earth. Any ideas?