fix(hues): don't set background where not needed

Details:
- `PmenuMatch` doesn't need background as it will blend with `Pmenu`.

Author: echasnovski

lua/mini/hues.lua

@@ -521,7 +521,7 @@ MiniHues.apply_palette = function(palette, plugins, opts)
   hi('PmenuExtraSel',  { link='PmenuSel' })
   hi('PmenuKind',      { link='Pmenu' })
   hi('PmenuKindSel',   { link='PmenuSel' })
-  hi('PmenuMatch',     { fg=p.fg,      bg=p.bg_mid,  bold=true })
+  hi('PmenuMatch',     { fg=nil,       bg=nil,       bold=true })
   hi('PmenuMatchSel',  { fg=nil,       bg=nil,       bold=true,   blend=0, reverse=true })
   hi('PmenuSbar',      { link='Pmenu' })
   hi('PmenuSel',       { fg=nil,       bg=nil,       blend=0,     reverse=true })