You may sell anything you produce using fabric purchased from the collection. This palette-restricted project uses the colors: f1ce6f (naples yellow), 8d6535 (soft brown), 0c7767 (pine), 00b870 (emerald), a3db79 (elfin green), c9f1ed (pale blue), and explores the concept of " serenity."
My own designs in this palette are here. Other colorways of this design can be found here.
*NOTE: the green background is the pine as shown above; pale blue frost crystals are whiter than the pale blue given below and so not strictly within the palette range, but have been adjusted to be the same hue value (174°) as the blue and so should coordinate well with all of the synergy serenity fabrics, particularly these which use the pine and pale blue hues.