how do i display, change the colour and move an object?

Question

idk how to display stuff like an object. i also want to know how to change the size of the object.

Answer 1

I'll make an assumption here that you're talking about 2D or 3D graphic objects in a scene.

Most graphics APIs offer you a property or setter function for the colour, position, scale, etc of an object in the scene, where the first property changes the ambient colour of the object, the scale can be used to change the size, so to speak via scaling the object and the position can be used to move the object.

There is often a material property that allows you to change the material and texture applied to the model (object) in the scene, which also affects the colour. The colour of the light sources also affects what colour the object is rendered.

Movement can be also changed by applying a force or inertia to an object.

The best answer to your question will always depend on the API or the graphics engine you're using.