Philosophy/to exist, properties
Everything we see around us exist, we see them with eyes etc. But things exist differently, by shape, color, material, size, etc. . Is it the existence that they all share is significant, or the differences they possess that is significant? What counts?
Be careful how you use the term "exist". You are changing the meaning in each sentence which can lead to confusing results.
Not sure what you mean by "what counts?" What is it that you are trying to establish? Existence? Different features or characteristic of objects?
In either case, direct experience is what leads us to knowledge about the world around us, and that would include the varying features that we observe.