Admiral:
In connection to this thread it seemed appropriate to mention that pillars in the real world have sometimes been very colourful and adorned with detailed scenes and patterns. The following are some quick Google catches from around the world, historical and modern. These include a mosaic pillar from Pompeii, cone mosaic semi-columns from Uruk, church interior from Moscow and modern takes on the theme in e.g. Karachi.
Looks ostentatious, and thus of interest as reference for Chaos Dwarf decorations (although ours would of course be more grimdark with skulls and angry bulls):
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