FYI, in designing logos i always think to make it still look good and consistant when it come in one color version (i.e. B/W version), a great logo should has the same meaning/look and message when it come in colorful and in B/W version :)
btw, when i see number 2020 i think it is about a "perfect vision" which is always noted as 20/20, right? that is why i always tried to put the slash (/) in my designs on this contest :)