Basically, a noob mistake. Had to add syntax-checking to my .spacemacs file

How did you style your flycheck warning-popup?

I don't recall making changes to the style of linter. Are you seeing something different, or just wantin got make a change?

this is how it looks for me.. I really liked how Spacemacs looked in the tutorial, especially the joker-linter-warning. @U05254DQM 🙂

Ah, the screenshot in the book I think is from a Mac version of Emacs, its not a specific Spacemacs one. I will update the image in the book (I dont have a Mac, so cant replicate the screenshot). Sorry if this was misleading.

I see, no worries. I have a mac book so I will keep on chasing for that nice look. I really liked it!

I suggest looking at the theme, as there are three variables that define the tooltip colours, ttip, ttip-sl ttip-bg https://github.com/syl20bnr/spacemacs/tree/develop/core/libs/spacemacs-theme Or you can use the Emacs customise feature https://github.com/syl20bnr/spacemacs/tree/develop/core/libs/spacemacs-theme#customizations

Thank you for the help! Really appreciate it.