Gold makes the pt image very cold, even purple. Once you have used developer on a print with gold in it, it forever has gold in the developer and will cool any image placed in it thereafter.
I have 2 containers of developer, one for gold and one for all others. (even the gold developer is purple)
It only needs replenishing when it needs more developer solution to properly cover and develop a print, otherwise it's fine.
I've bee using the same developer for many years now.