diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/common/Plot2dUtil.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/common/Plot2dUtil.kt
index 1a589c379..f5a104297 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/common/Plot2dUtil.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/common/Plot2dUtil.kt
@@ -94,11 +94,12 @@ object Plot2dUtil {
         alpha: Number?,
         colorBy: String?,
         showLegend: Boolean,
+        manualKey: Any?,
     ): Feature {
 
         return when (geomKind) {
             "point" -> {
-                geomPoint(color = color, size = size, alpha = alpha, showLegend = showLegend)
+                geomPoint(color = color, size = size, alpha = alpha, showLegend = showLegend, manualKey = manualKey)
             }
 
             "tile" -> {
@@ -108,7 +109,8 @@ object Plot2dUtil {
                     color = color,
                     size = size,
                     alpha = alpha,
-                    showLegend = showLegend
+                    showLegend = showLegend,
+                    manualKey = manualKey
                 ) {
                     fill = colorBy.takeIf { it != null } ?: "..count.."
                 }
@@ -119,7 +121,8 @@ object Plot2dUtil {
                     color = color,
                     size = size,
                     alpha = alpha,
-                    showLegend = showLegend
+                    showLegend = showLegend,
+                    manualKey = manualKey
                 ) {
                     this.color = colorBy.takeIf { it != null } ?: "..group.."
                 }
@@ -130,7 +133,8 @@ object Plot2dUtil {
                     color = color,
                     size = size,
                     alpha = alpha,
-                    showLegend = showLegend
+                    showLegend = showLegend,
+                    manualKey = manualKey
                 ) {
                     fill = colorBy.takeIf { it != null } ?: "..group.."
                 }
@@ -148,7 +152,8 @@ object Plot2dUtil {
         binWidth2d: Pair<Number, Number>?,
         color: String?,
         colorBy: String?,
-        showLegend: Boolean
+        showLegend: Boolean,
+        manualKey: Any?
     ): Feature {
         fun parseMarginalLayer(geomKind: String, side: Char, size: Any?): Feature {
             val marginalColor = when {
@@ -164,7 +169,8 @@ object Plot2dUtil {
                         color = marginalColor,
                         fill = marginalColor,
                         alpha = MARGINAL_ALPHA,
-                        showLegend = showLegend
+                        showLegend = showLegend,
+                        manualKey = manualKey
                     )
                 }
 
@@ -185,7 +191,8 @@ object Plot2dUtil {
                         alpha = MARGINAL_ALPHA,
                         bins = bins,
                         binWidth = binWidth,
-                        showLegend = showLegend
+                        showLegend = showLegend,
+                        manualKey = manualKey
                     )
                 }
 
@@ -194,7 +201,8 @@ object Plot2dUtil {
                         color = marginalColor,
                         fill = marginalColor,
                         alpha = MARGINAL_ALPHA,
-                        showLegend = showLegend
+                        showLegend = showLegend,
+                        manualKey = manualKey
                     )
                 }
 
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/joint/JointPlot.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/joint/JointPlot.kt
index dce4fa1e5..4d68c62d1 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/joint/JointPlot.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/joint/JointPlot.kt
@@ -73,6 +73,7 @@ fun jointPlot(
     alpha: Number? = null,
     colorBy: String? = null,
     showLegend: Boolean = true,
+    manualKey: Any? = null,
     regLine: Boolean? = null,
     se: Boolean = true,
     marginal: String? = null
@@ -88,6 +89,7 @@ fun jointPlot(
     alpha,
     colorBy,
     showLegend,
+    manualKey,
     regLine,
     se,
     marginal
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/joint/JointPlotBuilder.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/joint/JointPlotBuilder.kt
index b34d7cbc1..b67f87d7d 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/joint/JointPlotBuilder.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/joint/JointPlotBuilder.kt
@@ -28,6 +28,7 @@ internal class JointPlotBuilder(
     private val alpha: Number?,
     private val colorBy: String?,
     private val showLegend: Boolean,
+    private val manualKey: Any?,
     private val regLine: Boolean?,
     private val se: Boolean,
     private val marginal: String?
@@ -64,7 +65,8 @@ internal class JointPlotBuilder(
             size,
             alpha,
             colorBy,
-            showLegend
+            showLegend,
+            manualKey
         )
 
         // smooth layer
@@ -94,7 +96,8 @@ internal class JointPlotBuilder(
                 binWidth2d,
                 color,
                 colorBy,
-                showLegend
+                showLegend,
+                manualKey
             )
         }
 
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/qq/QQPlot.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/qq/QQPlot.kt
index 5b2ce8dfb..101f6a171 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/qq/QQPlot.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/qq/QQPlot.kt
@@ -76,6 +76,7 @@ fun qqPlot(
     quantiles: Pair<Number, Number>? = null,
     group: String? = null,
     showLegend: Boolean = true,
+    manualKey: Any? = null,
     color: String? = null,
     fill: String? = null,
     alpha: Number? = null,
@@ -94,6 +95,7 @@ fun qqPlot(
         quantiles,
         group,
         showLegend,
+        manualKey,
         color,
         fill,
         alpha,
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/qq/QQPlotBuilder.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/qq/QQPlotBuilder.kt
index 76bd40787..d15a1db85 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/qq/QQPlotBuilder.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/qq/QQPlotBuilder.kt
@@ -37,6 +37,7 @@ internal class QQPlotBuilder(
     private val quantiles: Pair<Number, Number>? = null,
     private val group: String? = null,
     private val showLegend: Boolean = true,
+    private val manualKey: Any? = null,
     private val color: String? = null,
     private val fill: String? = null,
     alpha: Number? = null,
@@ -69,6 +70,7 @@ internal class QQPlotBuilder(
         val mapping = qqMapping()
         return geomQQ(
             showLegend = showLegend,
+            manualKey = manualKey,
             color = color,
             fill = fill,
             alpha = myAlpha,
@@ -77,6 +79,7 @@ internal class QQPlotBuilder(
             stat = Stat.qq(myDistribution, dParams, mapping)
         ) + geomQQLine(
             showLegend = showLegend,
+            manualKey = manualKey,
             color = myLineColor,
             size = myLineSize,
             linetype = linetype,
@@ -88,6 +91,7 @@ internal class QQPlotBuilder(
         val mapping = qq2Mapping()
         return geomQQ2(
             showLegend = showLegend,
+            manualKey = manualKey,
             color = color,
             fill = fill,
             alpha = myAlpha,
@@ -96,6 +100,7 @@ internal class QQPlotBuilder(
             stat = Stat.qq2(mapping)
         ) + geomQQ2Line(
             showLegend = showLegend,
+            manualKey = manualKey,
             color = myLineColor,
             size = myLineSize,
             linetype = linetype,
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/residual/ResidualPlot.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/residual/ResidualPlot.kt
index 1aa5c77bd..923ad1795 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/residual/ResidualPlot.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/residual/ResidualPlot.kt
@@ -91,6 +91,7 @@ fun residualPlot(
     alpha: Number? = null,
     colorBy: String? = null,
     showLegend: Boolean = true,
+    manualKey: Any? = null,
     hline: Boolean = true,
     marginal: String = ResidualPlotBuilder.DEF_MARGINAL
 ) = ResidualPlotBuilder(
@@ -110,6 +111,7 @@ fun residualPlot(
     alpha,
     colorBy,
     showLegend,
+    manualKey,
     hline,
     marginal
 ).build()
\ No newline at end of file
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/residual/ResidualPlotBuilder.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/residual/ResidualPlotBuilder.kt
index 184e31a0f..8d3a66e67 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/residual/ResidualPlotBuilder.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/bistro/residual/ResidualPlotBuilder.kt
@@ -33,6 +33,7 @@ internal class ResidualPlotBuilder(
     private val alpha: Number?,
     private val colorBy: String?,
     private val showLegend: Boolean,
+    private val manualKey: Any?,
     private val hline: Boolean,
     private val marginal: String
 ) {
@@ -93,7 +94,8 @@ internal class ResidualPlotBuilder(
             size,
             alpha,
             colorBy,
-            showLegend
+            showLegend,
+            manualKey
         )
 
         // HLine
@@ -103,7 +105,7 @@ internal class ResidualPlotBuilder(
 
         // marginals
         if (marginal != "none") {
-            layers += Plot2dUtil.getMarginalLayers(marginal, bins2d, binWidth2d, color, colorBy, showLegend)
+            layers += Plot2dUtil.getMarginalLayers(marginal, bins2d, binWidth2d, color, colorBy, showLegend, manualKey)
         }
 
         return layers