Redecorating a Rainbow

I recently took a trip to a Vallarta market known for it's Hispanic products. I stumbled across this all purpose detergent that is currently packaged in a plastic bag.

I want it to appeal to homeowners 30's-40's, create a structural design maybe include a window so the consumer can see the product. Arcoiris means 'rainbow' so I may want to incorporate some of the rainbow colors to differentiate between scents.

Competitors: All, Ajax, Tide, Purex