"Matte" is a finish, "orange" is the colour.
Paint can be had (typically) in three "finishes"
"Matte" - also called "flat" - is the generally non-reflective version. Most paper is a "matte finish", so you get the idea. This is also a pain to keep clean.
"Semi-Matte", "Semi-Gloss," or sometimes "Pearl" - this is the not-highly-reflective but far-easier-to-clean finish that is often used for interior house paint. This can also often be had as a clearcoat to go over a colour coat - and enough coats of a pearl clearcoat can make the thing look like a light trap! It's really a beautiful effect of depth in the colour.
"Gloss" is the shiny finish usually used on cars. It's easiest to keep clean (because it's the smoothest surface,) and this can also be had (and, for automotive, typically is) as a clearcoat. You can get a "depth effect" using enough coats of this as well, but it requires far more buffing and rubbing to get right. Think "wet glass" for this sort of finish.
For automotive applications, it's usually much easier to use a good colour coat, and then a pearl or gloss clearcoat to get the final gloss/semi-gloss finish or effect.
