RFR: JDK-8293776 : Adds CSS 4 and 8 digits hex coded Color [v10]

[ScientificWare]

On Tue, 27 Sep 2022 03:17:26 GMT, ScientificWare <duke at openjdk.org> wrote:

>> This is referenced in Java Bug Database as
>> - [JDK-8293776 : Adds CSS 4 and 8 digits hex coded Color](https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8293776)
>> 
>> This is tracked in JBS as 
>> - [JDK-8293776 : Adds CSS 4 and 8 digits hex coded Color](https://bugs.openjdk.java.net/browse/JDK-8293776)
>> 
>> Adds the 4 and 8 digits color hex notations to CSS.java, as described in :
>> CSS Color Module Level 4
>> W3C Candidate Recommendation Snapshot, 5 July 2022
>> [6.2 The RGB Hexadecimal Notations: `#RRGGBB`](https://www.w3.org/TR/css-color-4/#hex-notation)
>> 
>> Designed from : [ScientificWare JDK-8293776 : Adds CSS 4 and 8 digits hex coded Color](https://github.com/scientificware/jdk/issues/13)
>
> ScientificWare has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Corrects a value in a message.
>   
>   A message is added to the result in case of failure only. The updated code does not output the actual value. The tested color is #f12a instead of #f00a.

Waiting a validation.

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PR: https://git.openjdk.org/jdk/pull/10317