How to change spell check highlight colours ?

You need to define following highlighting groups:
SpellBad
SpellCap
SpellRare
SpellLocal
For example, in my setup SpellBad is defined as
SpellBad xxx term=reverse ctermbg=1 gui=undercurl guisp=Red
-- shows as gray on red background

To learn how to write your own :highlight commands
1) :highlight - instructive, shows existing highlight groups
:hi
2) :help :hi
3) To check how Spell-related groups are defined:
:hi SpellBad
:hi SpellCap
:hi SpellRare
:hi SpellLocal

Yakov
---------------
If you use the following plugin:

http://vim.sourceforge.net/scripts/script.php?script_id=1081

and then type

:help hicolors

you'll see each highlighting color name in its own colors. This list includes

SpellBad SpellCap SpellLocal SpellRare

If you then right click on any of the names, a colorscheme editor will pop up
for that color. Edit it, save it, use it!

Regards,
Chip Campbell

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