Yea I did want to do some more AA but I ran out of colours pretty quick with that rainbow, and the rainbow is Iconic with Emerald City so I didnt want to lose it   C:

I think it could be far better if you tried to remove some colors to add more AA, at least on the rainbow. Otherwise I like your idea, just a menu and it could be the home screen of a funny game ^^

Nevertheless I think it could be better with a better management of colors (in order to add more details), good continuation :)