It is fairly hard to make a colour bomb when you have 6 colours. The chocolates and chocolate spawners on the top are hard to hit because no candies can fall 1 block under them, leaving 3 empty squares. Breaking the chocolates on top will make it only a little bit better due to the candy cannons spilling liquorice, although candies will spawn. 10-move candy bombs will spawn if you destroy the chameleon candies, covered in marmalade on the sides of the board.
Overall, 2 colour bombs is not a lot and this can be finished in under 10 moves if you make colour bombs early.
Find a way to destroy the top 3 chocolates at first. Then try to avoid liquorice from flooding the board. If you see regular matches that kill liquorice, try to use it because you won't have to deal with more and it can increase your chances of finding the right candy.
If you know how to set up colour bombs and predict future moves, then you should succeed in this easily.