CiM Maroon - no five, thank you very much - is one of those very dark reds that leaves you wondering if is a transparent or an opaque. CiM describes it as "dense," and dense it is.
It is a dark cherry-jam colour that will function as an opaque, but if you use it very thin - it will reveal itself as a transparent.
Try it over white or clear, in stringers, twisties or filigrana.
Two self-coloured spacers.
The tips of these doodads are not completely struck out.
And, of course - it is stiff like a transparent - so if you need that - this might be better than an opaque for you.
As with the CiM reds in general - I see no trace of "livering" - that unpleasant brownish cast that plagues some of the transparent reds.