I'm just using Hijack's /proc/empeg_display.raw (or whatever it is -- I'm not in front of my code right now), which is just a duplication of the empeg's internal (oddly packed) 2-bit bitmap. In addition, it would be nigh impossible to convert those colors to something useful in RFB's (oddly packed) 8-bit index. However, I do have plans to add color support to empegVNC. I don't know how closely it will match the actual display, but it'll get you closer.