Simple non-console control of Source-4 LED Series 2 fixtures

Can anyone recommend a low-cost controller (~$10,000?) for Source 4 LED Series 2 fixtures for use with a few fixtures in a non-theatrical application such as a car showroom or similar location?  For instance, in an application with 5 to 15 fixtures, is there a controller that would allow simple color control with a color wheel or similar color selection for programming of a limited number of pre-set scenes?  A system that would offer app--based control (Apple and Android) would be ideal.  Also, it is important that the controller be simple to operate for a person not experienced with lighting controls (showroom sales people, for example).

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