One of those "tip of my tongue" things, but somewhere in the mid 1990s, I read a novel, probably a paperback, which had a scene that has stuck in my head where the protagonists are attempting to escape a pursuing enemy force in a car. The two things that stuck out to me were that a) one of the ways they were discouraging pursuit was that they had an automatic gun mounted into the back of the car, which they were firing out of the back window and b) one of the people in the car (who I think was not a trained fighter), had been given a bunch of grenades, and there was a line that went something like "she was shucking pins and tossing grenades like an ambitious cornhusker".
I remember that the technology was mildly futuristic (cybernetic enhancements, high-powered guns readily available on the streets, but no thermonuclear grenades or dark hole bombs that I recall), and that magic was a thing, although I don't remember it being used in the scene.
I think that in the scene before, they were in a room where someone was commenting on a painting in the room and its artistic merits. There might have been a quirk to it where parts of the painting used colors outside of the human range of visions (but visible to other races). In retrospect, I might be pulling that out of a Spelljammer novel where I remember a mind flayer captain was explaining a similar concept.
Given the timing (and that I know I read some of them back then), there's a decent chance this is a Shadowrun book.