Two options here. Unfortunately, I haven't come across them using the second one anywhere as yet so I think we'll have to go with the first. Colour options are #2ec66d from the website's stylesheet, #57b057 from this PNG or #333333 from the website logo.
The only instance I've seen with the second version is their Facebook account and Twitter account.
Their Instagram account however uses with the wordmark.
I'm a bit familiar with the brand and I can say that using the logo alone is pretty recognizable.
But since the first version is officially provided, this is becoming hard to choose.
I would like to take some input to other @simple-icons/maintainers.
As for the color, I would choose with the website's stylesheet seeing as there's no brand guidelines (and I don't trust getting colors from raster images ;p).
Regarding the SVG, I think we are fine using the version without the word "pixabay" below or besides it, as they use it in official places as well and it is more appropriate for the purposes of Simple Icons. As far as I can tell they don't explicitly forbid us from doing so.
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Regarding the SVG, I think we are fine using the version without the word "pixabay" below or besides it, as they use it in official places as well and it is more appropriate for the purposes of Simple Icons. As far as I can tell they don't explicitly forbid us from doing so.