ok the things have to be not so fast in order for it to be fun more start time, and when get another size it adds 10 seconds and for easy control if it's just red blue orange and green and 4 things for the 4 colors to go into.
keyboard controls idea:
W: to put red in top left bar till full
A: to put blue in top right bar till full
S: to put orange in bottom left bar till full
W: to put green in bottom right bar till full