A computer graphic system has been developed that allows a color scientist to evaluate the appearance of gonio-apparent colors. Reflection modeling software is used to define a BRDF from existing computer graphic reflection models and standard appearance measurements for gloss and metallic travel. A visualization program allows the user to examine the BRDF that results from reflection modeling. Real-time software and hardware can be employed to adjust the BRDF and display a surface with the specified reflection properties. A high quality rendering system is available to make individual pictures that incorporate complex lighting and reflection effects.