FROM WHERE CAN I GET COLOR-MATCHING SELF-TAPPING SCREWS FOR USE WITH A METAL FRAME?

You can get them from our partner Staborn, specifically the Deckfast Metal screws (http://starbornindustries.com/deckfast-metal-product). They are available to color match. You can use the guide here to figure out which color matches our material: http://starbornindustries.com/deck-matcher/tool.