The gold_fiveseven.zip file you have requested: Skins / Weapons / CS: Source Gold Five-Seven - 5.53mb is not available. Perhaps try browsing all files for the game Counter-Strike: Source and upload any files you want to share or are missing. This is the only information we could locate:
Here's a reskin of the Five-Seven pistol that changes it to a gold color. The main body, as well as the grip and slide have been changed to varying shades of gold, making the gun appear to be made of gold.