tag:blogger.com,1999:blog-5574479.post120847964182010411..comments2024-03-28T16:45:51.051+00:00Comments on The IPKat: Why is this Kat laughing (hint: it's all about his blue shirt)?Verónica RodrÃguez Arguijohttp://www.blogger.com/profile/05763207846940036921noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-5574479.post-71747849061520644602018-11-23T17:19:17.692+00:002018-11-23T17:19:17.692+00:00BTW, blue shirts were the distinctive mark of the ...BTW, blue shirts were the distinctive mark of the <a href="https://de.wikipedia.org/wiki/Blauhemd_(FDJ)" rel="nofollow">FDJ</a>, the East German communist youth organization, and they also provided their nickname, "Blauhemden". I suspect the vivid colour was the product of an azo dye, which I hope wasn't too toxic.<br /><br />A certain colour trademark case was mentioned here years ago, which I can't retrace it just now. IIRC, when I checked it out, I discovered that the applicant had filed for several marks defining essentially the same hue but in different colour systems (CIE, RAL, etc.), just to make things more complicated. It would be time to inject some science into that field, e.g., by making reference to <a href="https://en.wikipedia.org/wiki/MacAdam_ellipse" rel="nofollow">MacAdam ellipses</a> for deciding how different two colours are.Alouettenoreply@blogger.com