Applying a different line type to first symbol of a trace only

I want to know if it is possible to have a trave of all the same symbol types (like a circle), the only the first symbol has a white line outlining it.

Assuming my attachments uploaded correctly, the one picture shows what I want to blue triangle symbol to look like (lined in white), but only for the first symbol in the trace. It seems I can set the opacities of individual symbols in a trace, and I can even change the symbol types for each item in a trace, but no matter what I do, I can’t seem to apply a special lining around the first symbol of a trace. Is this even possible?

![trace-despecial-lined-symbol finition|690x232](upload://hmCJTHqSUyJTHgJyhZwrN1SqEj6.pspecial-lined-symbol ng)