Lovely... The colour looks a lot different between the 3rd pic and the first 2 though. Never can be sure with the sun and camera angles.
As for tightening up the the throttle cable, it's a piece of cake....
follow the cable to a bracket with a little square piece of plastic in it
lift this upwards and out of the bracket
pull back the little piece of rubber that stops the screw thread losening and twist the square of plastic
don't tighten it too tight thou. Don't want it breaking.
to fit it back on just reverse the process.