I'm glad to know you like flavour-full dishes Mike. With your current choice of equipment, I think that is very evident. It surprises me when seasoned audiophiles get so excited by some equipment that whilst it is may be the ultimate in resolution and clarity lacks all manner of flavour and is headache inducing after 30 mins.
the sense of where the music is not well-served by coloration is personal. no absolutes. and is a system context thing too.
when does an overlay of color get in the way? a sameness. we like flavor and color in the music, but maybe not when it's a 'tint' to the true view.
i think it mostly requires an alternative that possesses natural/human 'flavor' and a 'rightness' to expose that sameness as coloration. there might also be artifacts involved that are not specifically coloration but highlight the differences in a particular system or type of music.
two recent decision points i made relative to this question were (1) dac choices back when i had the Lampi GG 1.5, then at the same time had the Nagra HD dac and the Aqua Formula dac, then a few months later the MSB Select II. then (2) when i brought in the Lamm ML3 and the VAC Statement 450's to compare to my dart 458's.
in each case i liked all the choices and would be happy with any of them. any of them might even be my first choice in another system or maybe smaller scale music expectations. but in both cases my personal view of the coloration as a comparative overlay were strong factors in my choices. i hope that gets more to the heart of my views on color and flavor. i like both when it serves the musical truth as i perceive it compared to the alternatives.
YMMV. others have had similar choices and made different decisions. no right or wrong to it.
i freely admit to using salt, pepper, parmesan cheese, and pepper flakes on certain dishes my wife makes. i realize it changes that essential taste of those dishes. that is how i like those dishes. my wife understands it and puts up with it. we are both happy that i am happy.
i prefer not to add seasonings to my music. the exception is possibly cartridges, but right now i don't own any 'flavored' cartridges, although i'm open to it.