Regards joe
Hi Joe and welcome to the forum.
Maybe... Of the classic Shimizu Dark Relay compositions, one uses charcoal as the main fuel so would appear dark grey in the cut through star, the other uses red gum and would be a light red so it might appear white. I'm sure benzoates could be made to work and would probably be cheaper than red gum.
PS: I've removed your duplicate thread from General Discussion as it's more appropriate here.