Ie Firefox Color Difference in Website Design & SEO Help Posted September 16, 2006 · Report reply IE still hasn't adapted the PNG stnadards. to make it work properly with PNG you need to make sure you use sanctioned websafe colors. Thats IE sanctioned web safe colors. MS has their own set of rules that they want everyone else to follow. anyway, the way I got it to work was by doing a little blending on teh edge of the PNG file. that way when IE changed the file color code, it still blended with the logo.