The color of the image is slightly dark and green

I am testing Astra Pro with the Astra SDK on Unity. I am not sure the color of the image as following is normal or not. Can someone tell me?

Besides, I tried to changing RGB24 in the ColorTextureRenderer script to other color types such as RGB32, but failed. The image only showed with the setting of RGB24. Why?

Thank you very much.

*Unity 5.3.6
*Windows 10
*Astra Pro