Fix problem with COLLADA lines missing colour #4

Job	Run time
build_models (GEOMODELS_SRC-Victoria, Bendigo)	1m 13s
build_models (GEOMODELS_SRC-Victoria, Otway)	2m 1s
build_models (GEOMODELS_SRC-WesternAust, Windimurra)	3m 13s
build_models (GEOMODELS_SRC-WesternAust, Sandstone)	2m 52s
build_models (GEOMODELS_SRC-SouthAust, BurraMine)	1m 7s
build_models (GEOMODELS_SRC-SouthAust, CentralFlinders)	2m 54s
build_models (GEOMODELS_SRC-SouthAust, NorthFlinders)	6m 27s
build_models (GEOMODELS_SRC-SouthAust, NorthGawler)	7m 39s
build_models (GEOMODELS_SRC-SouthAust, CurnamonaSed)	11m 45s
build_models (GEOMODELS_SRC-SouthAust, WesternGawler)	2m 43s
build_models (GEOMODELS_SRC-Tasmania, RoseberyLyell)	7m 53s
build_models (GEOMODELS_SRC-Queensland, Quamby)	1m 2s
build_models (GEOMODELS_SRC-Queensland, MtDore)	21m 36s
build_models (GEOMODELS_SRC-NewSouthWales, Tamworth)	53m 0s
build_models (GEOMODELS_SRC-NewSouthWales, Cobar)	3m 2s
build_models (GEOMODELS_SRC-NewSouthWales, Curnamona)	5m 37s
build_models (GEOMODELS_SRC-NewSouthWales, EastLachlan)	1m 57s
build_models (GEOMODELS_SRC-NewSouthWales, WestLachlan)	5m 45s
build_models (GEOMODELS_SRC-NewSouthWales, SthNewEngland)	30m 50s
build_models (GEOMODELS_SRC-NewSouthWales, NewEngland)	8m 31s
build_models (GEOMODELS_SRC-NorthernTerritory, McArthurBasin)	3m 17s
build_models (GEOMODELS_SRC-GA, NorthQueensland)	46s
build_models (GEOMODELS_SRC-GA, Yilgarn)	59s
build_models (GEOMODELS_SRC-GA, Tas)	1m 24s
build_models (GEOMODELS_SRC-CSIRO, RockleaDome)	29m 41s
build_models (GEOMODELS_SRC-NCI, StuartShelf)	1m 27s
	3h 38m 41s

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