RFR: JDK-8293776 : Adds CSS 4 and 8 digits hex coded Color [v6]

[ScientificWare]

On Mon, 19 Sep 2022 18:10:22 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> ScientificWare has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Corrects typos and digit extraction.
>>   
>>   Corrects typos.
>>   And applies a better digit extraction as suggested in main-line review thread.
>
> test/jdk/javax/swing/text/html/CSS/Hex3468DigitsColor.java line 71:
> 
>> 69:         alpha = color.getAlpha();
>> 70:         result.append("\n  Test for #ff1122aa");
>> 71:         if (red != 255) {
> 
> `red`, `green` and `blue` haven't changed here. You may want to get them from the `color` object.
> 
> Alternatively, you can compare the RGB:
> 
> if (0xaaff1122 != color.getRGB()) {
>     // fail the test
> }

I'm going to work on rgb() and rgba() notations (https://bugs.openjdk.org/browse/JDK-8294090). Could we let this unchanged or differ this change ?

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