Will these labels work with Avery ? I make labels from my tablet and I am comfortable with the system .

The OL6300 is not compatible with an Avery item, however we do have another 1.5" x 1.5" product that is compatible with Avery's 22805. I have included a link below for your review. https://www.onlinelabels.com/OL2681.htm You can view our other compatible items by visiting our Avery Cross-Reference List below. https://www.onlinelabels.com/av-cross-ref.htm

Does this come in colors or can I print various colors?

The OL6300 is available in a variety of colors which are produced on a matte, paper-based material. You can view the colored material options on the product page by scrolling down the list of materials. At this time we do not offer any waterproof colored materials, however you can add a colored background to your design using our free templates or our Maestro Label Designer software. If you'd like to try samples of any of these materials, please feel free to visit the link below to request a few sheets at no cost. https://www.onlinelabels.com/samples

Is the color more of a shiny gold or a dull gold? I am looking for something is a dull gold.

Our Gold Foil for Laser has a shiny, reflective surface. If you would like to see samples of the material to see if it will fit your needs, you are welcome to visit the link below to request a few sheets at no cost. https://www.onlinelabels.com/samples