whoa, this thing is probabely the sickest homebuilt press i`ve ever seen!
actually comes pretty close to the one they had in the manufactury i`ve visited once. just great! did you already test the adjustable camber tingy?
either you don`t paint it (or paint it how esscher said, a little blood red would enforce the effect) advantage: it fits perfectly into the the dark and somehow creepy environment and could maybe used also as set for a quentin tarantino movie or a horror shocker or splatter
or you paint it in some light colour. advantage: the room doesn`t look that creepy anymore and you get better fotos the next time
i only can start a method of elimination: don`t paint it babyblue, don`t paint it pink, don`t paint it all black...