[...] a minicontroller which can detect 8 red baloons located in a 4mx4m fixed perimeter. The vehicle's task is to detect the baloons and break them. My question is whether i can use the TCS3200 Color Sensor and how should i implement it on the vehicle
We need far more info on the task that your vehicle is expected to perform...
Are the 8 red ballons lying on the floor or...?
Does the person(s) managing the happening include balloons of other colors that must not be punctured?
At what distance do you need to detect them?
How close can the red balloons be?
If there's no other balloons in play and you have no rules saying that the vehicle must detect the red ballons before puncturing them, a fast rotating arm with a needle may do, if you just make the vehicle traverse the field in an exhaustive manner - a microphone could perhaps be included to detect the popping sound and use that for counting your "kills".
Or... Scan a blue LASER slowly over the field
But that's likely disallowed, so answer the 4 questions above and add whatever you may think relevant and give us a chance to help