bug#74055: 31.0.50; color-lighten-name not lightening black

[Gerd Möllmann]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Gerd Möllmann <gerd.moellmann@gmail.com>
>> Cc: Eli Zaretskii <eliz@gnu.org>,  julien@danjou.info,
>>   74055@debbugs.gnu.org,  noah@splode.com
>> Date: Tue, 29 Oct 2024 19:27:14 +0100
>> 
>> Mattias Engdegård <mattias.engdegard@gmail.com> writes:
>> 
>> > I'd say the old model (percentage points) is better because it results
>> > in changes that are perceptually more uniform. For example, with the
>> > current code,
>> >
>> >   (color-lighten-name C 5)
>> >
>> > has much less effect when C is a dark colour than for a light one.
>> > Therefore the change was probably a mistake in hindsight.
>> 
>> +1
>
> I hope I fixed that now, please take a look.
>
> Noah's original example works as expected, and the comparison with Web
> sites also seems to be working.

Works for me, too. Thanks!