Build two APK from a codecanyon script

Hi, I need a developer who can do this job asap. I am going to attach a script link below so that before bid please have a look on it.

https://codecanyon.net/item/ecart-multi-vendor-ecommerce-system/31977632

I need from you to just make a build of that after some changes
1. Change Logo
2. Change theme color (Already have a constant value)
3. Upload it on playstore after approval from my side (play store account is from my side)