I have used a couple of the gel liners with great success as a paintpot-like base --- black and indigo. I have the light green and it doesn't work as well.
Shimmercoconut- Can't write you cause your inbox is full. Wrote you an e-mail, but just wanted to say I got your paypal payment but you don't have an address on file. Pls write me and let me know where to ship your item