Added full popup support 
Added full popup support 

I tweaked some of the colors to my liking in the popup-tip-face which was already previously supported.
greduan/emacs-theme-gruvbox,greduan/emacs-theme-gruvbox,zzgraph/emacs-theme-gruvbox,ninrod/gruvbox-theme,greduan/emacs-theme-gruvbox,zzgraph/emacs-theme-gruvbox,zzgraph/emacs-theme-gruvbox,ninrod/gruvbox-theme