diff --git a/platform/lang-impl/src/com/intellij/codeInsight/hint/ParameterInfoComponent.java b/platform/lang-impl/src/com/intellij/codeInsight/hint/ParameterInfoComponent.java
index d253696a4e49..b60291cdb614 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/hint/ParameterInfoComponent.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/hint/ParameterInfoComponent.java
@@ -185,7 +185,8 @@ public final class ParameterInfoComponent extends JPanel {
                      ? ColorUtil.blendColorsInRgb(BACKGROUND, FOREGROUND, disabledSignatureAlpha(isDarkTheme))
                      : JBColor.namedColor("ParameterInfo.disabledForeground", new JBColor(0xA8A8A8, 0x777777));
     HIGHLIGHTED_BACKGROUND = mySimpleDesignMode
-                             ? ColorUtil.blendColorsInRgb(BACKGROUND, JBColor.GREEN, selectedSignatureAlpha(isDarkTheme))
+                             ? ColorUtil.blendColorsInRgb(BACKGROUND, getSelectedOverloadBackgroundBlendBase(),
+                                                          selectedSignatureAlpha(isDarkTheme))
                              : JBColor.namedColor("ParameterInfo.currentOverloadBackground", BORDER_COLOR);
     HIGHLIGHTED_COLOR = mySimpleDesignMode
                         ? FOREGROUND
diff --git a/platform/lang-impl/src/com/intellij/codeInsight/hint/ParameterInfoControlPresentationUtil.kt b/platform/lang-impl/src/com/intellij/codeInsight/hint/ParameterInfoControlPresentationUtil.kt
index 082be63dfa47..f23b8d923548 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/hint/ParameterInfoControlPresentationUtil.kt
+++ b/platform/lang-impl/src/com/intellij/codeInsight/hint/ParameterInfoControlPresentationUtil.kt
@@ -16,17 +16,31 @@ import com.intellij.ui.ColorUtil
 import com.intellij.ui.JBColor
 import com.intellij.ui.scale.JBUIScale
 import com.intellij.util.applyIf
-import com.intellij.util.ui.UIUtil
 import java.awt.Color
+import javax.swing.UIManager
 
 internal fun disabledSignatureAlpha(isDarkTheme: Boolean) =
-  if (isDarkTheme) 0.5 else 0.75
+  namedAlphaWithDefaults("ParameterInfo.mismatchedOverloadOpacity", if (isDarkTheme) 0.5 else 0.75)
 
 internal fun selectedSignatureAlpha(isDarkTheme: Boolean) =
-  if (isDarkTheme) 0.05 else 0.15
+  namedAlphaWithDefaults("ParameterInfo.matchedOverloadBackgroundOpacity", if (isDarkTheme) 0.05 else 0.15)
 
+internal fun mismatchedParameterAlpha(isDarkTheme: Boolean) =
+  namedAlphaWithDefaults("ParameterInfo.mismatchedParameterBackgroundOpacity", if (isDarkTheme) 0.05 else 0.2)
+
+internal fun defaultParameterAlpha(isDarkTheme: Boolean) =
+  namedAlphaWithDefaults("ParameterInfo.defaultValueOpacity", if (isDarkTheme) 0.5 else 0.75)
+
+internal fun deselectedParameterAlpha(isDarkTheme: Boolean) =
+  namedAlphaWithDefaults("ParameterInfo.notCurrentParameterOpacity", if (isDarkTheme) 0.6 else 0.9)
+
+internal val selectedOverloadBackgroundBlendBase = JBColor.namedColor("ParameterInfo.matchedOverloadBackgroundBase", JBColor.GREEN)
+private val mismatchedParameterColor = JBColor.namedColor("ParameterInfo.mismatchedParameterBackgroundBase", JBColor.RED)
 private val isUnitTestMode = ApplicationManager.getApplication().isUnitTestMode
 
+private fun namedAlphaWithDefaults(name: String, default: Double) =
+  (UIManager.get(name) as? Int)?.let { it / 100.0 }?.coerceIn(0.0, 1.0) ?: default
+
 @NlsSafe
 internal fun renderSignaturePresentationToHtml(
   editor: Editor,
@@ -38,10 +52,10 @@ internal fun renderSignaturePresentationToHtml(
 ): String {
   val backgroundColor = context.defaultParameterColor ?: JBColor.WHITE
   val isDarkTheme = ColorUtil.isDark(backgroundColor)
-  val deselectedParamAlpha = if (isDarkTheme) 0.6 else 0.9
-  val defaultParamAlpha = if (isDarkTheme) 0.5 else 0.75
+  val deselectedParamAlpha = deselectedParameterAlpha(isDarkTheme)
+  val defaultParamAlpha = defaultParameterAlpha(isDarkTheme)
   val disabledSignatureAlpha = disabledSignatureAlpha(isDarkTheme)
-  val mismatchedParameterAlpha = if (isDarkTheme) 0.05 else 0.2
+  val mismatchedParameterAlpha = mismatchedParameterAlpha(isDarkTheme)
   val textAttributes = TextAttributes().apply {
     foregroundColor = EditorColorsManager.getInstance().getGlobalScheme().let {
       it.getAttributes(HighlighterColors.TEXT).foregroundColor
@@ -50,7 +64,7 @@ internal fun renderSignaturePresentationToHtml(
   }
   val currentParameter = currentParameterIndex
 
-  val mismatchedParameterBgColor = "#${ColorUtil.toHex(ColorUtil.blendColorsInRgb(backgroundColor, JBColor.RED, mismatchedParameterAlpha))}"
+  val mismatchedParameterBgColor = "#${ColorUtil.toHex(ColorUtil.blendColorsInRgb(backgroundColor, mismatchedParameterColor, mismatchedParameterAlpha))}"
   val backgroundColorHex = "#${ColorUtil.toHex(backgroundColor)}"
   val separatorStr = "<span style=\"color:#${ColorUtil.toHex(textAttributes.foregroundColor)};\">$separator</span>"
   val parameters = parametersPresentation
@@ -75,7 +89,8 @@ internal fun renderSignaturePresentationToHtml(
           }
           else if (!isUnitTestMode) {
             "<code>$it</code>"
-          } else it
+          }
+          else it
         }
     }
 
diff --git a/platform/platform-resources/src/themes/metadata/IntelliJPlatform.themeMetadata.json b/platform/platform-resources/src/themes/metadata/IntelliJPlatform.themeMetadata.json
index 94bb405bb35c..c6decb8bf7da 100644
--- a/platform/platform-resources/src/themes/metadata/IntelliJPlatform.themeMetadata.json
+++ b/platform/platform-resources/src/themes/metadata/IntelliJPlatform.themeMetadata.json
@@ -1251,6 +1251,34 @@
       "key": "ParameterInfo.currentOverloadBackground",
       "description": "Selection background"
     },
+    {
+      "key": "ParameterInfo.matchedOverloadBackgroundBase",
+      "description": "Matched overload background blend base. Default is green. Should match with ParameterInfo.mismatchedParameterBackgroundBase, which by default is red. The color is blended onto ParameterInfo.background using ParameterInfo.matchedOverloadBackgroundOpacity."
+    },
+    {
+      "key": "ParameterInfo.matchedOverloadBackgroundOpacity",
+      "description": "Matched overload opacity percentage in range 0 - 100. It is used to control how much should ParameterInfo.currentOverloadBackgroundBase color blend with the ParameterInfo.background color."
+    },
+    {
+      "key": "ParameterInfo.mismatchedParameterBackgroundBase",
+      "description": "Mismatched parameter background blend base. Default is red. Should match with ParameterInfo.matchedOverloadBackgroundBase, which by default is green. The color is blended onto ParameterInfo.background using ParameterInfo.mismatchedParameterBackgroundOpacity."
+    },
+    {
+      "key": "ParameterInfo.mismatchedParameterBackgroundOpacity",
+      "description": "Mismatched parameter background opacity percentage in range 0 - 100. It is used to control how much should ParameterInfo.mismatchedParameterBackgroundBase color blend with the ParameterInfo.background color."
+    },
+    {
+      "key": "ParameterInfo.mismatchedOverloadOpacity",
+      "description": "Opacity percentage in range 0 - 100. It is used to control how opaque should non-matching signature be."
+    },
+    {
+      "key": "ParameterInfo.defaultValueOpacity",
+      "description": "Opacity percentage in range 0 - 100. It is used to control how opaque should parameter default values be."
+    },
+    {
+      "key": "ParameterInfo.notCurrentParameterOpacity",
+      "description": "Opacity percentage in range 0 - 100. It is used to control how opaque should a not current parameter be. A current parameter is that under the cursor and it has 100% opacity."
+    },
     {
       "key": "ParameterInfo.currentParameterForeground"
     },