Mobile development

I need an Android app. I already have a design for it, I just need it to be built. Looking for someone with experience with AR. What I want is this: The app must detect an object (template) in the real world. The app must project a 3d model of another object onto the template in the screen. I should be able to change the colors of the virtual object displayed on screen in place of the detected real world template. I will display required 3D model, image files and texture files. The output should be a very basic app allowing me to customize the virtual object's appearance by clicking one button to show the next "color" or "texture".