Hi Ahmadmauladi, Thank you for your suggestions. Your entry #6 does have something interesting. But I think yhe red "ball" (Yin Yan) somehow is too dominating. And secondly I am not sure what is symbolises? My logo should associate with the logo of Google (SEO= Search Engine Optimization). I believe that all the colurs f Googles logo: blue, red, yellow,blue, green, red should be colours of the logo.