@Carioca
Sorry to hard for me
but i tryed it and looks stupid
Ok links!
Here is the v_357 with blue 'red and gold and V_grenade
Drag and drop the V_grenade folder in here
C:\Program Files\Valve\Steam\SteamApps\your-login\half-life 2 deathmatch\hl2mp\materials\models\weapons
Drag and drop the v_357 folder in here (if you havn't already done so before)
C:\Program Files\Valve\Steam\SteamApps\your-login\half-life 2 deathmatch\hl2mp\materials\models\weapons
NOTE: only the .vtf file called 357_sheet.vtf works ' you will find 3 .vtf's in the v_357 folder the one called 357_sheet.vtf is the "gold" one the other 2 are named
If you want to use one of the others just rename the "357_sheet.vtf" to 357_sheetgold.vtf and then just rename one of the others back to 357_sheet.vtf
Sorry to hard for me

Ok links!
Here is the v_357 with blue 'red and gold and V_grenade
Drag and drop the V_grenade folder in here
C:\Program Files\Valve\Steam\SteamApps\your-login\half-life 2 deathmatch\hl2mp\materials\models\weapons
Drag and drop the v_357 folder in here (if you havn't already done so before)
C:\Program Files\Valve\Steam\SteamApps\your-login\half-life 2 deathmatch\hl2mp\materials\models\weapons
NOTE: only the .vtf file called 357_sheet.vtf works ' you will find 3 .vtf's in the v_357 folder the one called 357_sheet.vtf is the "gold" one the other 2 are named
If you want to use one of the others just rename the "357_sheet.vtf" to 357_sheetgold.vtf and then just rename one of the others back to 357_sheet.vtf