Code

if !ConVarExists("gzg_onlyGroup") then
	CreateConVar("gzg_onlyGroup",0)
end

if !ConVarExists("gzg_ocilation") then
	CreateConVar("gzg_ocilation",4)
end

if !ConVarExists("gzg_doplayer") then
	CreateConVar("gzg_doplayer",1)
end

if !ConVarExists("gzg_usergroup") then
	CreateConVar("gzg_usergroup","superadmin admin donators vip")
end

if SERVER then return end

local function canFlash(ply)

	if(GetConVarNumber("gzg_onlyGroup") == 0) then return true end

	local str = GetConVarString("gzg_usergroup")
	local gr = string.Explode(" ",str)

	return(table.HasValue(gr,ply:GetNWString("usergroup")))
end

hook.Add("PostDrawViewModel","RainbowPhysgun",function(v,p,w)

	if(canFlash(p)) then
		p:SetWeaponColor(Vector(math.abs(math.cos(RealTime()*GetConVarNumber("gzg_ocilation")/10)),math.abs(math.sin(RealTime()*GetConVarNumber("gzg_ocilation")/10)),math.sin(RealTime()*GetConVarNumber("gzg_ocilation")/10)))
	end

end)

hook.Add("PostPlayerDraw", "RainbowPhysgunOthers", function()

	for k,v in pairs(player.GetAll()) do

		if(IsValid(v:GetActiveWeapon()) && v:GetActiveWeapon():GetClass() == "weapon_physgun" && canFlash(v)) then
			v:SetWeaponColor(Vector(math.abs(math.cos(RealTime()*GetConVarNumber("gzg_ocilation")/10)),math.abs(math.sin(RealTime()*GetConVarNumber("gzg_ocilation")/10)),math.sin(RealTime()*GetConVarNumber("gzg_ocilation")/10)))
		end

		if(GetConVarNumber("gzg_doplayer") == 1 && canFlash(v)) then
			v:SetPlayerColor(Vector(math.abs(math.cos(RealTime()*GetConVarNumber("gzg_ocilation")/10)),math.abs(math.sin(RealTime()*GetConVarNumber("gzg_ocilation")/10)),math.sin(RealTime()*GetConVarNumber("gzg_ocilation")/10)))
		end

	end

end)