That one there is a platinum silver - I think it sold in singapore for excess of 200,000 pounds.
High shines are different, they possess a phosphore gene within the scales, but not to the extent of the platinum, however they come across significantly shinier and brighter than a regular silver but are very hard to find even in an overseas market.
If you go on mfk now there is a recent post in the aro section of a xanthic silver aro! Looks amazing! Completely bright yellow!
Other colour forms exist such as leucism, albinism (there has been asian aros with this), melanism etc but the possibility of finding an aro with one of these traits here is pretty much zip.