Ineipon

1998 - 2003
Ineipon's logo was the Chrome HTML text colored like google around this time.

2003 - 2006
The 2003 logo used the "SEGA" font, colored like the rainbow's colors in order.

2006 - 2008
Later, this peroid, Ineipon designed it like YouTube's logo as flat (Which resulted in the lastest YT logo from 2017). Also, the red was gray.

2008 - 2013
This was the late version of the lastest logo since 2013. It used the 1998 Google logo, but colored like 1997 Google's colors.

2013 - present
The new logo instead does not use the 1998 google logo, but the 1999 - 2013 logo.