While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
What color are you wanting to go? FWIW I died the bright orange plastic cheek rest and magwell on my MK12 black and it looks factory. Grey should not be an issue assuming you go darker color.
The tan items were discontinued by Magpul to focus on black items as the move out of Colorado was straining the manufacture process. In the past I have dye magazines successfully with Rite Dye, easy and quick