Right: Black Mauve - Mauve with Cherry MX Black top housing. Sounds more solid (warning: subjective) than regular Mauves. Still not as good as Cherry MX Black but closer.
Left: Red Tap Dancer - Cherry MX Black bottom housing + Mauve top housing + Kailh Pro Burgundy stem. Extended stem tip striking Cherry MX Black bottom housing makes sound that reminds you of tap dancing. Two issues: shorter key travel, somewhat scratchy.
UPDATE: Mauves sound pretty nice but there is a slight hint of cheap plastic soap case sound to it. Cherry MX Black top housing reduces some of that.