Bringing theme colors to ODF

[Regina Henschel]

Hi Tomaž,

Tomaž Vajngerl schrieb am 25.03.2023 um 11:10:
> Hi Regina,
> 
[..]
> OTOH it probably makes sense to rename dk1, lt1, dk2, lt2, hlink, 
> folHlink to the full names dark1, light1, ... , hyperlink, 
> followed-hyperlink - which is inline with ODF style to not to abbreviate 
> things. I planned to do that change but other things have priority 
> currently.

Do we need names at all in the relaxNG schema? The colors could be put 
as space separated list into one attribute. Such list is ordered too.

Kind regards,
Regina