[Bug 163535] Chart default color palette (chart-palettes.soc) has (multiple) pairs of overly-similar colors

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=163535

--- Comment #7 from V Stuart Foote <vsfoote at libreoffice.org> ---
(In reply to Heiko Tietze from comment #6)
> ...
> The palette just allows to name colors, the definition is done in
> officecfg/registry/schema/org/openoffice/Office/Chart.xcs. 
> ...
> 
> I could imagine that these colors are close to the set from competitors. But
> I would proudly use a different set. Perhaps something close to R's rainbow
> 
> > rainbow(11)
> 
>  [1] "#FF0000" "#FF8B00" "#E8FF00" "#5DFF00" "#00FF2E" "#00FFB9" "#00B9FF"
>  [8] "#002EFF" "#5D00FF" "#E800FF" "#FF008B"

We'd need 12.

As to format in the .xcs, seems past time for chart's RGB notation to be
shifted from the integer to hex notation as we've done elsewhere.

The values do match the listing in the palette .soc:

<snip>
<value>17798 16728590 16765728 5741852 8257569 8637183 3227652 11456256 4923247
16749838 12910603 34001</value>
<!-- 0x004586 0xff420e 0xffd320 0x579d1c 0x7e0021 0x83caff 0x314004 0xaecf00
0x4b1f6f 0xff950e 0xc5000b 0x0084d1 -->
</snip>

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