Thanks for the offer, I appreciate it.

Unfortunately they look about the same as my current Pro4 turnbuckles, a sort of faded purple colour.
I was wondering whether anyone had ever seen any aftermarket turnbuckles to buy which were the same colour as the HPI/HB aluminium parts such as the motor mounts, bulkheads, wishbone mounts etc. I think I'm going to get some silver titanium ones instead, at least they will match my stainless screws. Not to worry...
Stu