Amount of colour RAM

[fredrikr]

Describe where we can find the problematic topic
In Chapter 14: Programming with memory, section VIC-IV Video memory, subsection Colour memory, I find the text:

"The VIC-IV has 64KB of dedicated memory for colour data, capable of supporting all
of the possible screen modes. This memory can be accessed directly using the upper
memory addresses FF8.0000 – FF8.FFFF"

However, if I do poke $0ff88000,value I change the colour of the character in the upper left corner of the screen, and if I peek $0ff80000 I find the same value that I just poked in at $0ff88000". So, looks to me like it's actually 32 KB, and the addressing wraps around after 32 KB.

Describe the solution you'd like
Looks like it should say there's 32 KB of colour RAM, and that $0ff88000-$0ff8ffff is a shadow of $0ff80000-$0ff87fff.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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