The term food colouring is identified in base64 scheme by the sequence Zm9vZCBjb2xvdXJpbmc=, while the MD5 signature is equal to 784a4348dc0b0e55a9d07eec28cdd252. The ASCII encoding of food colouring in hexadecimal notation is 666f6f6420636f6c6f7572696e67.