The C= logo
was used by Commodore
Business Machines back in the day
. The C and the top flag was blue, the bottom flag was red.
After Commodore went bankrupt
, the name Commodore and the logo were sold to Tulip BV in The Netherlands
. Tulip's C= logo had the top flag red and the bottom one blue. Oh, by the way, Tulip's gotten into financial troubles too these days.. (not quite bankrupt, like I previously stated)
The logo was lovingly called "Chickenlips" by Commodore employees.