What worked for me is edit the tint values in the weapons_doubleaction.meta at

mods\update\x64\dlcpacks\mpchristmas2017\dlc.rpf\common\data\ai

and

mods\update\update.rpf\dlc_patch\mpchristmas2017\common\data\ai

I put these values in and it doesn't have a golden tint for me.

<Name>TINT_DOUBLEACTION</Name>
<Tints>
<Item>
<SpecFresnel value="0.000000" />
<SpecFalloffMult value="0.000000" />
<SpecIntMult value="0.000000" />
<Spec2Factor value="0.000000" />
<Spec2ColorInt value="0.000000" />
<Spec2Color value="0x00EDE240" />
</Item>
</Tints>
</Item>
</TintSpecValues>

doesnt work , is it Replace or Add-on? it only has one YTD file, cant replace with other guns, wheres the other "Mag1","Mag2" YTD?.....why the hell y'all make it like , just goddamn make it straight replace.

@ShenLongKazama
In this case, the gloss disappears. You just need to change the color.
I changed <Spec2Color value="0x00EDE240" /> to <Spec2Color value="0x00D2D2D2" />
Looks good

@Garluth These 3 files are enough for replace. Did you read the ReadMe.txt?

@Clark Higgs nah thanks man i fixed it....replaced it on "Revolver" , still seems unusual the bullets looks out of gun and some bugs.....but i love it , i love this mod great gun...

@Clark Higgs It still has the tint for me. Any else I'm missing besides changing those values?

@DevTheTipsyCanadian
You installed all files this mod in: update\x64\dlcpacks\mpchristmas2017\dlc.rpf\x64\models\cdimages\weapons.rpf and changed only this line <Spec2Color value="0x00EDE240" /> to <Spec2Color value="0x00D2D2D2" /> in weapon.meta?
After that, yellow shine has not changed to gray shine?

@Clark Higgs Oddly enough, no. It's still gold for me. I'll try reinstalling it, and update you from there

@Clark Higgs Is there a different weapons.meta that I should be editing other than the double action file in the 2017 Christmas dlc?

@DevTheTipsyCanadian I editing only file that was discussed in the comments (HeySlickThatsMe, ShenLongKazama)
If you still don't succeed, I can try to send you my file if you want...

@Clark Higgs That would be great.

@DevTheTipsyCanadian Oops, it looks like I got the file name wrong in my yesterday comment... Forget what i said about "weapon.meta". You need another file. You need file "weapons_doubleaction.meta" from "GTA V -> mods -> update -> update.rpf -> dlc_patch -> mpchristmas 2017 -> common -> data -> ai"
In "weapons_doubleaction.meta" you need to find these lines:
<TintSpecValues>
<Item>
<Name>TINT_DOUBLEACTION</Name>
<Tints>
<Item>
<SpecFresnel value="0.950000" />
<SpecFalloffMult value="120.000000" />
<SpecIntMult value="0.800000" />
<Spec2Factor value="60.000000" />
<Spec2ColorInt value="4.000000" />
<Spec2Color value="0x00EDE240" />
</Item>
</Tints>
</Item>
</TintSpecValues>

And replace this line <Spec2Color value="0x00EDE240" /> to <Spec2Color value="0x00D2D2D2" />

In addition, you need to install the mod files ("w_pi_wep1_gun_hi.ydr"; "w_pi_wep1_gun.ytd"; "w_pi_wep1_gun.ydr") in GTAV\mods\update\x64\dlcpacks\mpchristmas2017\dlc.rpf\x64\models\cdimages\weapons.rpf

After that, you should succeed

@Clark Higgs It worked!

Revolver with this gloss color (D2D2D2) looks like this: https://ibb.co/0y59VVd
@DevTheTipsyCanadian Congratulations!)

@Clark Higgs THANKS BRO I LOVE U

could you do a snub version?

Good job, Lundy!

@Clark Higgs Do you have any idea how it would be possible to change the tint for this as a FiveM resource?

fivem can use ?

It has gold reflect still, please fix that.