[Fizzlemizz]

Taking a look at the templates you could probably use:

for _,GTxtframe in GossipFrame.GreetingPanel.ScrollBox:EnumerateFrames() do
    if (GTxtframe.GreetingText) then    -- Greeting Text
        GTxtframe.GreetingText:SetText(Greeting_PL);
        GTxtframe.GreetingText:SetFont(QTR_Font2, 13);
    elseif (GTxtframe.GetElementData().buttonType==GOSSIP_BUTTON_TYPE_OPTION) then   -- Options
        GTxtframe:SetText(GS_Gossip[OptHash]);
        local regions = { GTxtframe:GetRegions() }
        for k, v in pairs(regions) do
            if v:GetObjectType() == "FontString" then
                v:SetFont(QTR_Font2, 13)
            end
        end
    end
end