http://www.dakkadakka.com/dakkaforum/posts/list/8.page JForum - http://www.jforum.net http://www.dakkadakka.com/dakkaforum/posts/preList/517807/5455649.page http://www.dakkadakka.com/dakkaforum/posts/preList/517807/5455649.page GMT
The bolters all had red casings and the tips of all flame weapons were yellow (and noise marines wore leopard print and were hair metal rock gods).

I don't think there is a specific reasoning behind it, if you like the splash of red that the casing brings use it if not black casings are the usual way to go.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/517807/5455809.page http://www.dakkadakka.com/dakkaforum/posts/preList/517807/5455809.page GMT
]]> http://www.dakkadakka.com/dakkaforum/posts/preList/517807/5455826.page http://www.dakkadakka.com/dakkaforum/posts/preList/517807/5455826.page GMT http://www.dakkadakka.com/dakkaforum/posts/preList/517807/5455891.page http://www.dakkadakka.com/dakkaforum/posts/preList/517807/5455891.page GMT