Hi I'm brand new to the forum and I'm sure the question has probably been asked before so bear with me. I live in Kansas and have two of the rigid black plastic ponds from Home Depot. A larger one I did a small waterfall with that turned out great and a new tiny 40 gal. one I just installed with a water bell spray. On the larger one I used Rock On A Roll to cover the black plastic edge and give it a more natural look but since it's about $35.00 a roll plus shipping I was wondering on the new small one (the whole pond was only $39.00) if there was some way to paint the interior of the pond so it's some color besides black? I can rock up to edge of the pond to cover the black plastic lip but then there's still the problem of the black showing on the inside of the pond down to the water. Any advice or other ideas would be appreciated, thanks!