The green color is too light, to pastel. It makes it hard to see on the white background. On the nightmode background the white lettering is difficult to read, (for me any ways), I think the black background needs to be a little bit darker.
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I guess they do not want any meme's made of the new logo, unless they make them. Seems to me If Steem is the top company, and steemit is a secondary endeavour, then it would be the Primary Logo they would want to protect most. The 3 S squiggles, and not the Trump hair-do head Logo.