Can't speak for the West Africans, but in John Nunnelely's memoir of service in the KAR there is no mention of kukris. They carried the East African panga bush knife (essentially a machete) for clearing brush, and a bayonet for skewering Japanese. He does mention capturing Ghurkhas serving in the I.N.A., so in fact you can have kukris on the Japanese side, if you want.
An interesting titbit I picked up is that the white officers in the KAR blackened their faces and hands for combat, because otherwise they would attract an undue amount of fire from the Japanese, who naturally would try to shoot anyone who obviously stood out as an officer.