fix(base16): explicitly define FloatBorder and use for 'mini.nvim'

Resolve #2064

Author: echasnovski

lua/mini/base16.lua

@@ -486,6 +486,7 @@ H.apply_palette = function(palette, use_cterm)
   hi('Directory',      {fg=p.base0D, bg=nil,      attr=nil,            sp=nil})
   hi('EndOfBuffer',    {fg=p.base03, bg=nil,      attr=nil,            sp=nil})
   hi('ErrorMsg',       {fg=p.base08, bg=p.base00, attr=nil,            sp=nil})
+  hi('FloatBorder',    {link='NormalFloat'})
   hi('FoldColumn',     {fg=p.base0C, bg=p.base01, attr=nil,            sp=nil})
   hi('Folded',         {fg=p.base03, bg=p.base01, attr=nil,            sp=nil})
   hi('IncSearch',      {fg=p.base01, bg=p.base09, attr=nil,            sp=nil})
@@ -708,7 +709,7 @@ H.apply_palette = function(palette, use_cterm)
     hi('MiniAnimateCursor',      {fg=nil, bg=nil, attr='reverse,nocombine', sp=nil})
     hi('MiniAnimateNormalFloat', {link='NormalFloat'})
 
-    hi('MiniClueBorder',              {link='NormalFloat'})
+    hi('MiniClueBorder',              {link='FloatBorder'})
     hi('MiniClueDescGroup',           {link='DiagnosticFloatingWarn'})
     hi('MiniClueDescSingle',          {link='NormalFloat'})
     hi('MiniClueNextKey',             {link='DiagnosticFloatingHint'})
@@ -744,7 +745,7 @@ H.apply_palette = function(palette, use_cterm)
     hi('MiniDiffOverContextBuf', {})
     hi('MiniDiffOverDelete',     {link='DiffDelete'})
 
-    hi('MiniFilesBorder',         {link='NormalFloat'})
+    hi('MiniFilesBorder',         {link='FloatBorder'})
     hi('MiniFilesBorderModified', {link='DiagnosticFloatingWarn'})
     hi('MiniFilesCursorLine',     {fg=nil,      bg=p.base02, attr=nil,    sp=nil})
     hi('MiniFilesDirectory',      {link='Directory'})
@@ -783,14 +784,14 @@ H.apply_palette = function(palette, use_cterm)
     hi('MiniMapSymbolLine',  {fg=p.base0D, bg=nil,      attr=nil, sp=nil})
     hi('MiniMapSymbolView',  {fg=p.base0F, bg=nil,      attr=nil, sp=nil})
 
-    hi('MiniNotifyBorder',      {link='NormalFloat'})
+    hi('MiniNotifyBorder',      {link='FloatBorder'})
     hi('MiniNotifyLspProgress', {link='MiniNotifyNormal'})
     hi('MiniNotifyNormal',      {link='NormalFloat'})
     hi('MiniNotifyTitle',       {link='FloatTitle'})
 
     hi('MiniOperatorsExchangeFrom', {link='IncSearch'})
 
-    hi('MiniPickBorder',        {link='NormalFloat'})
+    hi('MiniPickBorder',        {link='FloatBorder'})
     hi('MiniPickBorderBusy',    {fg=p.base0E, bg=p.base01, attr=nil,         sp=nil})
     hi('MiniPickBorderText',    {fg=p.base0D, bg=p.base01, attr='bold',      sp=nil})
     hi('MiniPickCursor',        {fg=nil,      bg=nil,      attr='nocombine', sp=nil, blend=100})