The Reverse Color Organ (RCO) is an interactive device that enables viewers to explore the nature of synaesthesia, or sensory blending, and to expand upon their understanding of how paintings communicate.   The installation utilizes image recognition and audio playback software to create an interactive approach to viewing paintings.   As the viewer points the web camera at one the paintings the program triggers that image's particular audio loop suggesting an aural equivalent. The participant is now playing the RCO and is compelled to continue searching the wall for more visual/sonic relationships. The sonic palate includes music composed specifically for the paintings in the installation, as well as found sounds and samples of popular music that are in some way linked to the images.   The visual palate includes paintings from a larger body of work, now numbered at over 200 pieces, in which process is the primary focus and the subject is secondary, often revealing itself long after the painting is dry.   In its current stage, the artist and composer determine the connections between the sonic palate and the visual palate.   In the future, however, we plan on using additional sensors and image processing in order to give the participant a more active role in determining the relationships between the images and their sounds.  For example, color could be used to control the pitch of the sound and lightness could control the frequency spectrum.  As the viewer navigates the camera through the individual image on a micro scale they will have control over their own selection and processing of the sounds.