ui: 3-tier Amount color + conditional Total color (v6.1.6 polish)

Overview Total:
  - Was static green in stylesheet (failed to cascade on some Qt builds)
  - Now set programmatically in setBalance(): green when total > 0,
    red when empty. Stylesheet rule for #labelTotal removed; C++ owns
    the color so the rule can react to the balance value.

Transaction amounts (both paint sites, Overview recent-5 + Transactions tab):
  - 3-tier rule using existing TransactionStatus enum:
      0 confirms  (Unconfirmed) -> COLOR_UNCONFIRMED grey   (#61280E)
      1..3 confs  (Confirming)  -> COLOR_CONFIRMING pale    (#C5EBC9)
      4+ confs    (Confirmed)   -> COLOR_POSITIVE bright   (#7CDB8A)
      Conflicted                -> COLOR_UNCONFIRMED grey
      Immature                  -> olive via .ui (unchanged)
  - Negative amounts (spent) stay red across all tiers
  - Now matches the icon column's existing state distinction
    (transaction_0 / transaction_1..3 / transaction_confirmed)

Files touched:
  src/qt/guiconstants.h            new COLOR_CONFIRMING constant
  src/qt/overviewpage.cpp          Total rule + 3-tier amount rule
  src/qt/transactiontablemodel.cpp 3-tier amount rule in ForegroundRole
  src/qt/forms/overviewpage.ui     removed static #labelTotal rule

src/qt/guiconstants.h

@@ -13,16 +13,14 @@ static const int STATUSBAR_ICONSIZE = 16;
 /* Invalid field background style */
 #define STYLE_INVALID "border: 1px solid #ff0000;background:#1c1c1c;color: #e32105;"
 
-/* Transaction list -- unconfirmed transaction (text only) */
+/* Transaction list -- unconfirmed transaction (0 confirms: grey, both directions) */
 #define COLOR_UNCONFIRMED QColor(97, 40, 14)
 /* Transaction list -- negative amount (confirmed: spent) */
 #define COLOR_NEGATIVE QColor(255, 0, 0)
-/* Transaction list -- positive amount (confirmed: received/mined) */
+/* Transaction list -- positive amount (fully confirmed, depth >= RecommendedNumConfirmations) */
 #define COLOR_POSITIVE QColor(124, 219, 138)
-/* Transaction list -- unconfirmed positive amount (pending credit, dim green) */
-#define COLOR_UNCONFIRMED_POSITIVE QColor(61, 139, 90)
-/* Transaction list -- unconfirmed negative amount (pending debit, dim red) */
-#define COLOR_UNCONFIRMED_NEGATIVE QColor(142, 26, 4)
+/* Transaction list -- partially confirmed positive amount (1..RecommendedNumConfirmations-1 confirms) */
+#define COLOR_CONFIRMING QColor(197, 235, 201)
 /* Transaction list -- bare address (without label) */
 #define COLOR_BAREADDRESS QColor(97, 40, 14)
 

src/qt/overviewpage.cpp

@@ -52,11 +52,15 @@ public:
 
         if(amount < 0)
         {
-            foreground = confirmed ? COLOR_NEGATIVE : COLOR_UNCONFIRMED_NEGATIVE;
+            foreground = COLOR_NEGATIVE;
         }
         else if(!confirmed)
         {
-            foreground = COLOR_UNCONFIRMED_POSITIVE;
+            foreground = COLOR_UNCONFIRMED;
+        }
+        else if(index.data(TransactionTableModel::StatusRole).toInt() == (int)TransactionStatus::Confirming)
+        {
+            foreground = COLOR_CONFIRMING;
         }
         else
         {

src/qt/transactiontablemodel.cpp

@@ -577,17 +577,28 @@ QVariant TransactionTableModel::data(const QModelIndex &index, int role) const
     case Qt::TextAlignmentRole:
         return column_alignments[index.column()];
     case Qt::ForegroundRole:
-        // Amount column: 4 states — confirmed/unconfirmed × positive/negative.
-        // Other columns fall through to addressColor/etc.
+        // Amount column color rule (3 tiers for positives, 2 for negatives):
+        //   0 confirms (Unconfirmed)                       -> COLOR_UNCONFIRMED grey
+        //   Confirming (1..RecommendedNumConfirmations-1)  -> COLOR_CONFIRMING light green (positives only)
+        //   Confirmed (depth >= RecommendedNumConfirmations) -> COLOR_POSITIVE bright green
+        //   Immature stays olive via stylesheet (unchanged)
+        //   Conflicted (depth < 0)                         -> COLOR_UNCONFIRMED grey
+        //   Negative amounts (spent) stay red across all confirmation tiers.
         if(index.column() == Amount)
         {
             qint64 amount = rec->credit + rec->debit;
-            bool unconfirmed = !rec->status.countsForBalance && rec->status.status != TransactionStatus::Immature;
-            if(unconfirmed)
+            // Grey: unconfirmed, conflicted, or otherwise not counting for balance (and not immature)
+            if(!rec->status.countsForBalance && rec->status.status != TransactionStatus::Immature)
             {
-                return amount < 0 ? COLOR_UNCONFIRMED_NEGATIVE : COLOR_UNCONFIRMED_POSITIVE;
+                return COLOR_UNCONFIRMED;
             }
-            return amount < 0 ? COLOR_NEGATIVE : COLOR_POSITIVE;
+            // Negative amounts always red (spent), no matter confirmation tier
+            if(amount < 0)
+            {
+                return COLOR_NEGATIVE;
+            }
+            // Positive amounts: lighter green while still confirming, bright green once fully confirmed
+            return rec->status.status == TransactionStatus::Confirming ? COLOR_CONFIRMING : COLOR_POSITIVE;
         }
         if(!rec->status.countsForBalance && rec->status.status != TransactionStatus::Immature)
         {