I really like the concept of the game a lot. I just feel that it should be implemented differently. First things first, the arrows did blend together far too well, which led to some very disappointing clicks. Thus, the different directions should maybe be different colors.
But, what I'd love to see with this concept is this: Instead of making this a random point and click and hope game, it could be mildly adapted to become a game where you must find the largest chain in a set case, or remove all the arrows within X clicks. Thus, the maps would have to be pre-set up and might involve things such as: when this line of arrows is removed, this arrow fall is here making a new line of arrows, which lets you complete the level. I think that this concept as a puzzle game would be much more entertaining if done right, and the solid blue color would then make sense, as it would add some more challenge to the game.
Just my opinion, of course you don't have to do this, as it would be a very different game, but I think it would be a fun idea you may want to try.