My initial ideas

Name of cereal bar: Protein Power.

Packaging would be mainly black with maroon text on the top of the packaging (name of bar and slogan).

Slogan: stronger with every bar.

Target market will be for anyone who enjoys/takes part in sports/exercise.

A negative to this cereal bar is that the target market may be quite limited.

However I think that the people that would buy it would always come back to it and could gain good reputation through word of mouth.

Also the colours of the packaging will be quite subtle and this may appeal to the customers.

I probably would have to set prices low as there is lots of competition in the fitness bar market.