/usr/share/ghostscript/lib
Edit: /usr/share/ghostscript/lib/ras24.upp (219B)
-supModel="SUN rasterfile, 24 Bit, 7 Colors (RGB-Error-Diffusion)"
-sDEVICE=uniprint
-dNOPAUSE
-P- -dSAFER
-dupColorModel=/DeviceRGB
-dupRendering=/ErrorDiffusion
-dupOutputFormat=/SunRaster
-dupComponentBits="{8 8 8}"