Black bags have piping or black welting in a variety of places, along the bottom edge of the lid, along the face of the bag, at the junction of the top of the lid and the valence or skirt. Some bags do not have piping along the flap edges. Standard piping can be seen in the pictures on the product pages, if colored piping is chosen it simply replaces the black piping in all the standard locations. Pictures of colored piping can be seen in the gallery or a sample of it can be seen here. When brown bags are ordered we have complimentary brown piping that is used on the bag and there isn't an extra charge for the standard color used. The same is true for white bags. Occasionally a customer wants a piping color to match their seat or paint. The colors available are seen on the product ordering page and we do mail out swatches of the colors available to be compared to the bike color or seat. We can also make piping so if a color is not available as one of our common colors it may be possible to find the material and make the piping. There are times that  the buyer does not want all the piping to be a different color, but just one area of the bag changed. For changes or samples it is best to call us 888-265-9650 or email sales@leatherworksinc.com