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Solna

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Hi. I've had to revert your changes to file:Solna vapen.svg since the copyright to the image you uploaded is owned by Solna Municipality and as such is not free enough for use on Commons. From your edit on sv.wiki i take it you read Swedish so I'd recommend sv:Wikipedia:Anmäl_ett_fel#Vanligaste frågorna which describes why Wikipedia/Commons uses different images than the swedish municipalities. /Lokal_Profil 11:50, 13 October 2010 (UTC)Reply

Do you think that the new version I've uploaded could work

The new version is still not free since the face you used is that from the copyrighted (official) source.
But the main problem is that you seem to have gotten coat of arms (CoA) slightly mixed up. A CoA is defined only by it's blason (so for Solna that is "I blått fält en sol av guld"). Any heraldicly correct interpretation of the blason gives a valid CoA. The interpretations used by e.g. Solna kommun on it's homepage is therefore not more or less correct then a version here. The difference is that their version is copyrighted. The only way for our version to be free is if it's an independent interpretation of the blason. I.e. an interpretation which does not actively try to look like the one used on the homepage but instead focuses only on the blason. For this reason changing colours and shapes to be more like those on the homepage and similar is problematic since it goes away from the "independent interpretation" and turns it into a derivative, and thus unfree, work.
So specifically for Solna. Since the blason didn't specify that the sun should have a face I left it of. Had the blason said "bildad sol" then it would have had to have a face. Since the plain "sol" can be drawn with or without a face both would be heraldicly correct but, to me at least, without a face would be the most obvious interpretation of the blason. As for the alternating rays this is something I'm currently investigating. I know that British heraldry most often use this type of rays but so far I haven't found that the same convention holds for Nordic heraldry.
As for the colours/tinktures (almost) all of the CoA used on sv.wiki follow a uniform set of shades. Although there are plans to change these to a new set. But when this is done it will be done by a bot so as to not leave some in one shade and others in another. /Lokal_Profil 17:47, 17 October 2010 (UTC)Reply
So in short the CoAs aren't different from those on the municipalities homepages due to mistakes but rather due to the very nature of blasons enabeling alternative interpretations. Obviously there can still be actual mistakes as well. The "official" versions or versions imitating them (such as File:Sveriges domstolar vapen.svg) may not be uploaded here since they are copyrighted by Riksarkivet. The discussion about the colour changes can be found at sv:Wikipediadiskussion:Projekt_heraldik#Färger. /Lokal_Profil 18:20, 17 October 2010 (UTC)Reply