The acrylic base in Lime Paint does not effect the quality of brightening in color when wet, etc. Because Lime Paint is about 55% lime, the full quality and character is retained.
Now, the use of the word "organic" is quite frequently used incorrectly in regards to paint.
Organic only refers to biological or carbon based materials. It is a term used in chemistry. In college they offer courses in inorganic and organic chemistry. There is a definite difference. (you can look it up in wikepedia). When speaking about paint, the proper term is even more important, since we are now more conscious about products made from petroleum, which are organic, and products which are mineral in nature, which are inorganic. Why not use the correct word?:inorganic...it is a good word which the public needs to learn.