Aqua Green - Normal:
Aqua green normal. Her shy self.

Light green - Happy:
It means she very happy.

Dark green - Jealous:
Surprisingly she gets jealous

Red - Anger:
Still surprised

Grey - Broken:
If there is no pupils in her eyes, then she is broken

Light blue - Curious:
Roxie is a very curious girl

Dark blue - Sad/Depressed:
She can get sad if she remembers her brother(SPOILERS!!!)

Pink - In love:
She likes, like in love, with someone if her eyes are pink

Purple - Passion:
She will have purple eyes if she is doing something she loves

Pink/Purple - ???:
She never had that eye color

Black - ???:
No one knows

//THATS ALL FOLKS! XD