I really like this game, and see it going far. The graphics and game play are really fun, but totally feel MUCH too complex for starting.
Though, if you just spam the white potion, you get some Eggs to hatch, even with it being useless. And I got high score just spamming white (was curious how it worked).
If you take this further (it is rather fun and I suggest you do!). I suggest that you start with just a few colors of potions, and a certain amount of eggs in a day (10?) - so you get 100% of eggs in 30 secs of day if you get all eggs for the day and get bonus for extra time left.
If you had a sign with rules that build as you go - So maybe level 1 is three colors of potions and three egg colors. Then day two, spots show up on one egg color and need a different potion combo and then day three add a new potion color/egg color. So it can be like SIMON where the rules get more complex as you add colors and types of eggs (spots/vertical stripes/horizontal stripes/wavy stripes/two tone eggs/two tone eggs with spots/stripes) and if the color match rules grew, you could learn basic ones and keep building your knowledge. Hope that makes sense. (And since you are hatching so many different dragons, more eggs are coming your way and as they mate more different types of dragons! :D)
So Day one - start with Red, Black and White potions (all colors are examples - see below)
Blue egg - red potion
Yellow egg - black potion
Red egg - white potion
Then Day two - Red, Black and White potions
Blue egg - Red potion
Blue egg/ Blue spots - Red potion + white Potion
Yellow egg - black potion
Red egg - white potion
Then Day Three = Red, Black and White potions and Green Potion
Blue egg - Red potion
Blue egg/ Blue spots - Red potion + white Potion
Yellow egg - black potion
Yellow egg/Yellow Spots - Black potion + Green Potion
Red egg - white potion
And if you make the color rules "random" so maybe one game is Red, Green, Orange and another is Black, White, Purple to start could make it very re-playable.
Sorry for the long post, but this really got me excited and I think it is a great game.