Pablo pointed out the bug in Evince. Sorry too. I've used another PDF
viewer and SVG color displays correctly. Thanks.

El mié., 20 de may. de 2020 a la(s) 16:32, Jairo A. del Rio (
jairoadelrio6@gmail.com) escribió:

> Info from \luatexbanner
>
> For ConTeXt (LuaTeX): This is LuaTeX, Version 1.13.0 (TeX Live 2021/dev)
> For ConTeXt (LMTX): This is LuaMetaTeX, Version 2.06.03
>
> El mié., 20 de may. de 2020 a la(s) 16:25, Hans Hagen (j.hagen@xs4all.nl)
> escribió:
>
>> On 5/20/2020 10:26 PM, Jairo A. del Rio wrote:
>> > I did. It turns out that installing graphicsmagick does the trick (pun
>> > intended) for Noto Color Emoji. However, the issue persists for SVG
>> > fonts and the same message appears, despite of having cleaned the cache
>> > (I've used mtxrun --script cache --erase). Using the code Pablo sent,
>> > with EmojiOne Color instead of Twemoji Mozilla, I get the following
>> > error messages:
>>
>> So, what version do you use?
>>
>> Hans
>>
>> -----------------------------------------------------------------
>>                                            Hans Hagen | PRAGMA ADE
>>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
>> -----------------------------------------------------------------
>>
>