hmm... you might want to post a smaller picture and maybe 100% crops of key areas instead of such a huge picture.
if you want to keep the orange feel, this is fine. if you want it to be white, then do a manual white balance or. if you want in btwn, switch white balance to tungsten - will turn out slightly orange, since street light is warmer than tungsten.
as for noise (higher iso = more noise). well,
1. shoot at low iso. compensate the shutter speed by using tripod or similar.
2. correct it in post using noise reduction software like neatimage, noise ninja?, etc...
3. use a flash
4. use a faster lens if available
