mat, matte

Mat or mat means a small rug or carpet--
Leave your wet boots on the mat.
Where is the mat that was in front of the sink?

Mat also means to be compressed into a mass, instead of having distinct hairs or fibers, as a carpet, fur or hair--
That chair will mat the carpet unless you put casters under the legs.
Brush the dog so that his fur doesn't mat.

Mat also means the piece of cardboard or paper that surrounds a framed print or photo--
This picture would look nice with a bright red mat.

Matte or matte ( rhymes with mat ) describes a dull or non-glossy finish--
Did you want your photos with a glossy finish or a matte finish?
We want a washable paint with a matte finish for the kitchen.

Now that you know that, you can say--
"I would like to frame this floor mat with a mat of matte blue, in a silver frame."

Note--"Matt" ( rhymes with mat ) is a male's given name, short for Matthew--
Did you ask Matt if he wants to pick up the pizza?