Conversation so far:
When did Kwame Nkrumah organize the People's party?
On 12 June 1949.
Why did he make it?
there was considerable pressure on Nkrumah from his supporters to leave the UGCC and form his own party.
What was its symbol?
The CPP adopted the red cockerel as its symbol.

Question: What were all of the parties' colors?
Self-contained rewrite: What were all of the Convention People's Party colors?