Frank’s ideas on harmony also went against the tide. When others advocated monochromatic environments, Frank wrote: “The monochromatic surface appears uneasy, while patterns are calming, and the observer is unwillingly influenced by the slow, calm way it is produced. The richness of decoration cannot be fathomed so quickly, in contrast to the monochromatic surface which doesn’t invite any further interest and therefore one is immediately finished with it.”
(taken from http://www.svenskttenn.se/en-us/pages/article/stjosef.aspx)