Kui_Nameplates picks its colour source table once at load
(Modules/ClassColours.lua:90 and Libs/Kui/Kui.lua:56-60):
cc_table = CUSTOM_CLASS_COLORS or RAID_CLASS_COLORS
with no per-key fallback. When the !ClassColors addon is loaded it
injects a vanilla-10-only CUSTOM_CLASS_COLORS, so the 22 CoA tokens
silently fall through and class-coloured friendly names disappear
(plus a nil-arg in kui.GetClassColour for the str path).
New file mirrors any RAID_CLASS_COLORS entry that CUSTOM_CLASS_COLORS
is missing, when !ClassColors is loaded. Idempotent — only fills nil
keys, so user customisations win. RAID_CLASS_COLORS itself is left
untouched (the Voljin/CoA client populates it from
patch-B.MPQ → SharedXML/SharedConstants.lua).
Same pattern as coa-omen and coa-shadowedunitframes' fixes.