diff --git a/src/main/java/com/nomiceu/nomilabs/integration/betterp2p/LabsClientCache.java b/src/main/java/com/nomiceu/nomilabs/integration/betterp2p/LabsClientCache.java
new file mode 100644
index 0000000..d44d2ec
--- /dev/null
+++ b/src/main/java/com/nomiceu/nomilabs/integration/betterp2p/LabsClientCache.java
@@ -0,0 +1,14 @@
+package com.nomiceu.nomilabs.integration.betterp2p;
+
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.math.BlockPos;
+import kotlin.Pair;
+
+import java.util.List;
+
+public class LabsClientCache {
+
+    public static final List<Pair<BlockPos, EnumFacing>> inputLoc = new ObjectArrayList<>();
+    public static final List<Pair<BlockPos, EnumFacing>> outputLoc = new ObjectArrayList<>();
+}
diff --git a/src/main/java/com/nomiceu/nomilabs/mixin/betterp2p/GuiAdvancedMemoryCardMixin.java b/src/main/java/com/nomiceu/nomilabs/mixin/betterp2p/GuiAdvancedMemoryCardMixin.java
index 0fd89b5..8651a69 100644
--- a/src/main/java/com/nomiceu/nomilabs/mixin/betterp2p/GuiAdvancedMemoryCardMixin.java
+++ b/src/main/java/com/nomiceu/nomilabs/mixin/betterp2p/GuiAdvancedMemoryCardMixin.java
@@ -1,5 +1,9 @@
 package com.nomiceu.nomilabs.mixin.betterp2p;
 
+import com.nomiceu.nomilabs.integration.betterp2p.LabsClientCache;
+import com.projecturanus.betterp2p.client.gui.InfoList;
+import com.projecturanus.betterp2p.client.gui.InfoWrapper;
+import kotlin.Pair;
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
@@ -9,9 +13,12 @@
 import com.projecturanus.betterp2p.client.gui.GuiAdvancedMemoryCard;
 import com.projecturanus.betterp2p.client.gui.widget.WidgetTypeSelector;
 import com.projecturanus.betterp2p.item.BetterMemoryCardModes;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 /**
- * Allows accessing needed functions and fields.
+ * Allows accessing needed functions and fields. Also fills up LabsClientCache.
  */
 @Mixin(value = GuiAdvancedMemoryCard.class, remap = false)
 public abstract class GuiAdvancedMemoryCardMixin implements AccessibleGuiAdvancedMemoryCard {
@@ -26,6 +33,13 @@ public abstract class GuiAdvancedMemoryCardMixin implements AccessibleGuiAdvance
     @Final
     private WidgetTypeSelector typeSelector;
 
+    @Shadow
+    protected abstract InfoWrapper getSelectedInfo();
+
+    @Shadow
+    @Final
+    private InfoList infos;
+
     @Override
     @Unique
     public BetterMemoryCardModes labs$getMode() {
@@ -49,4 +63,22 @@ public abstract class GuiAdvancedMemoryCardMixin implements AccessibleGuiAdvance
     public void labs$closeTypeSelector() {
         typeSelector.setVisible(false);
     }
+
+    @Inject(method = "refreshOverlay", at = @At("HEAD"))
+    private void fillLabsCache(CallbackInfo ci) {
+        LabsClientCache.inputLoc.clear();
+        LabsClientCache.outputLoc.clear();
+
+        var selected = getSelectedInfo();
+        if (selected == null) return;
+
+        infos.getSorted().stream()
+                .filter(info -> info.getFrequency() == selected.getFrequency())
+                .filter(info -> info.getType() == selected.getType())
+                .filter(info -> info.getLoc().getDim() == selected.getLoc().getDim())
+                .filter(info -> !info.equals(selected))
+                .map(info -> new Pair<>(info.getOutput() ? LabsClientCache.outputLoc : LabsClientCache.inputLoc,
+                        info.getLoc()))
+                .forEach(pair -> pair.getFirst().add(new Pair<>(pair.getSecond().getPos(), pair.getSecond().getFacing())));
+    }
 }
diff --git a/src/main/java/com/nomiceu/nomilabs/mixin/betterp2p/RenderHandlerMixin.java b/src/main/java/com/nomiceu/nomilabs/mixin/betterp2p/RenderHandlerMixin.java
new file mode 100644
index 0000000..a8b69de
--- /dev/null
+++ b/src/main/java/com/nomiceu/nomilabs/mixin/betterp2p/RenderHandlerMixin.java
@@ -0,0 +1,31 @@
+package com.nomiceu.nomilabs.mixin.betterp2p;
+
+import com.nomiceu.nomilabs.integration.betterp2p.LabsClientCache;
+import com.projecturanus.betterp2p.client.render.OutlineRenderer;
+import com.projecturanus.betterp2p.client.render.RenderHandler;
+import kotlin.Pair;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.util.math.BlockPos;
+import net.minecraftforge.client.event.RenderWorldLastEvent;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+import java.util.Collection;
+
+/**
+ * Adds different overlay colors for Output/Input.
+ */
+@Mixin(value = RenderHandler.class, remap = false)
+public class RenderHandlerMixin {
+
+    /**
+     * Replace original outline handler.
+     */
+    @Redirect(method = "renderOverlays", at = @At(value = "INVOKE", target = "Lcom/projecturanus/betterp2p/client/render/OutlineRenderer;renderOutlinesWithFacing(Lnet/minecraftforge/client/event/RenderWorldLastEvent;Lnet/minecraft/entity/player/EntityPlayer;Ljava/util/Collection;III)V", ordinal = 1), require = 1)
+    private static void replaceOriginalOutlineHandler(RenderWorldLastEvent evt, EntityPlayer p, Collection<Pair<BlockPos, EnumFacing>> coordinates, int r, int g, int b) {
+        OutlineRenderer.renderOutlinesWithFacing(evt, p, LabsClientCache.inputLoc, 0x6d, 0x9c, 0xf8);
+        OutlineRenderer.renderOutlinesWithFacing(evt, p, LabsClientCache.outputLoc, 0xec, 0xb3, 0x6c);
+    }
+}
diff --git a/src/main/resources/mixins.nomilabs.betterp2p.json b/src/main/resources/mixins.nomilabs.betterp2p.json
index b65db0f..70db9c5 100644
--- a/src/main/resources/mixins.nomilabs.betterp2p.json
+++ b/src/main/resources/mixins.nomilabs.betterp2p.json
@@ -14,6 +14,7 @@
     "GuiAdvancedMemoryCardKtAccessor",
     "GuiAdvancedMemoryCardMixin",
     "ModeWidgetButtonMixin",
+    "RenderHandlerMixin",
     "WidgetP2PColumnMixin",
     "WidgetP2PDeviceMixin",
     "WidgetTypeSelectorMixin"