FYI, I used a diversion and thought that maybe I could concatenate the SVG 
code by cutting it in 3 :
- the beginning of SVG code
- the part with the hexadecimal code
- At the end of the SVG tag

So thank Mohammad (and Eric) for this : 
https://kookma.github.io/TW-Scripts/#Concatenate%20Different%20Tiddlers%20in%20one%20Tiddler

I can now set color with picker :D (see at 
https://silvyn.github.io/tw-minstyle/ under button "Plus d'options" in 
sidebar )

1. <$edit-text tiddler="$:/favicon.ico/temp2" field="text" type="color" 
tag="input"/>
2. <$button class="ms-outline-info">OK
   <$wikify name="out" text="""<$list filter="[tag[$:/favicon.ico]]"><$text 
text={{!!text}}/></$list>""">
      <$action-setfield $tiddler="$:/favicon.ico" type="image/svg+xml" 
text=<<out>> />
   </$wikify>
</$button>

I still wonder if it wouldn't be possible to do this with a single button 
with several actions inside, and above all cleaner.

Sorry for the hijacking of this discussion, I'm done ;)

Le jeudi 17 décembre 2020 à 11:50:31 UTC+1, Sylvain Naudin a écrit :

> Hi Tones,
>
> It's not a problem for me, look at my attempt.
> I just write the content when user want to change color via config 
> tiddler, so it's not an issue about loaded.
>
> For the moment with the simple macro I can do it, but it's hard coded.
> I would like to make the choice of colour settings.
> Ideally with a single button or drop-down list, but doing it in 2 steps 
> can satisfy me too.
>
> [image: Capture d’écran 2020-12-17 à 11.45.30.png]
>
> Do you see my goal ? I don't know how to use wikify output of 
> $:/n0d1/palettes/n0d1##favicon-color 
> and inject it in my macro.
> I feel like it's all silly, but it has to be me :D
>
> Regards,
> Sylvain
>
> Le jeudi 17 décembre 2020 à 00:50:35 UTC+1, TW Tones a écrit :
>
>> The main issue maybe is a $:/favicon which is loaded perhaps before any 
>> other logic is occurring.
>>
>> Are you trying to get the favicon icon to convey information according to 
>> its color? Nice Idea.
>>
>> Tones
>>
>> On Thursday, 17 December 2020 at 06:24:08 UTC+11 [email protected] wrote:
>>
>>> Hi Jeremy,
>>>
>>> Thanks but I don't worried about type field (because I use my existing 
>>> $:/favicon.ico tiddler, but you're right it's better to be add this).
>>>
>>> My concern is about to set color (in the example black) as variable, and 
>>> not hard coded in the macro.
>>>
>>> Do you have an idea ?
>>>
>>> Thanks :)
>>>
>>> Le mercredi 16 décembre 2020 à 18:39:17 UTC+1, Jeremy Ruston a écrit :
>>>
>>>> Hi Sylvain
>>>>
>>>> Just set the type field to indicate that it is an SVG image:
>>>>
>>>> <$button class="" tooltip="Color Favicon" aria-label='Color 
>>>> Favicon'>Add color to $:/favicon.ico
>>>>         <$action-setfield $tiddler="$:/favicon.ico" text=<<favi 
>>>> "black">> type="image/svg+xml"/>
>>>> </$button>
>>>>
>>>> Best wishes
>>>>
>>>> Jeremy
>>>>
>>>> On 16 Dec 2020, at 17:18, Sylvain Naudin <[email protected]> wrote:
>>>>
>>>> \define favi(color)
>>>> <svg xmlns="http://www.w3.org/2000/svg"; width="144.798" 
>>>> height="87.014" viewBox="0 0 38.311 23.022">
>>>>   <path d="M19.41.004L2.814.88A2.97 2.97 0 00.008 3.634l-.001.023a2.646 
>>>> 2.646 0 002.45 2.828l3.958.284A1.438 1.438 0 017.75 8.187l.138 11.97a2.866 
>>>> 2.866 0 002.66 2.824l.01.001a2.45 2.45 0 002.625-2.456L13.12 8.56a3.124 
>>>> 3.124 0 012.585-3.093l1.328-.233a1.419 1.419 0 011.65 1.2l2.03 
>>>> 14.453a1.401 
>>>> 1.401 0 002.396.777l3.76-3.905a1.694 1.694 0 012.595.186l3.31 4.606a1.13 
>>>> 1.13 0 002.027-.447l3.48-18.22a1.67 1.67 0 00-1.12-1.899l-1.274-.417a2.066 
>>>> 2.066 0 00-2.704 1.815l-.473 6.598a.882.882 0 
>>>> 01-1.621.414l-1.146-1.78a1.39 
>>>> 1.39 0 00-2.217-.159l-1.908 2.198a.97.97 0 01-1.673-.396l-2.13-8.34A2.551 
>>>> 2.551 0 0019.409.005z" fill="$color$" />
>>>> </svg>
>>>> \end
>>>>
>>>> <$button class="" tooltip="Color Favicon" aria-label='Color 
>>>> Favicon'>Add color to $:/favicon.ico
>>>>         <$action-setfield $tiddler="$:/favicon.ico" text=<<favi 
>>>> "black">> />
>>>> </$button>
>>>>
>>>>
>>>>

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