diff --git a/engine/CHANGELOG.md b/engine/CHANGELOG.md
index d677d1df..8c24fcda 100644
--- a/engine/CHANGELOG.md
+++ b/engine/CHANGELOG.md
@@ -1,3 +1,9 @@
+# @wwtelescope/engine 7.28.1 (2023-07-01)
+
+- Make sure that annotations properly rerender after their opacity is changed
+  (#259, @Carifio24).
+
+
 # @wwtelescope/engine 7.28.0 (2023-06-26)
 
 - Add support for rotating the view with two-finger touch gestures (#257, @Carifio24).
diff --git a/engine/package.json b/engine/package.json
index 9f241eae..574a1c54 100644
--- a/engine/package.json
+++ b/engine/package.json
@@ -58,5 +58,5 @@
     "uglify": "uglifyjs src/index.js -c -o src/index.min.js"
   },
   "types": "./src/index.d.ts",
-  "version": "7.28.0"
+  "version": "7.28.1"
 }
diff --git a/engine/wwtlib/Annotation.cs b/engine/wwtlib/Annotation.cs
index e22f2ee0..ae2f3a2a 100644
--- a/engine/wwtlib/Annotation.cs
+++ b/engine/wwtlib/Annotation.cs
@@ -97,7 +97,11 @@ public static double Separation(double Alpha1, double Delta1, double Alpha2, dou
         public double Opacity
         {
             get { return opacity; }
-            set { opacity = value; }
+            set
+            {
+                Annotation.BatchDirty = true;
+                opacity = value;
+            }
         }
         string id;
         
diff --git a/research-app/CHANGELOG.md b/research-app/CHANGELOG.md
index 3a960a05..460248c8 100644
--- a/research-app/CHANGELOG.md
+++ b/research-app/CHANGELOG.md
@@ -1,3 +1,11 @@
+# @wwtelescope/research-app 0.15.0 (2023-07-01)
+
+- Allow some grid overlay colors to be modified through JSON messages (#258,
+  @Carifio24). In particular, `altAzGridColor`, `eclipticColor`,
+  `eclipticGridColor`, `equatorialGridColor`, `galacticGridColor`, and
+  `precessionChartColor` are now handled as engine settings.
+
+
 # @wwtelescope/research-app 0.14.4 (2023-06-08)
 
 - Also ensure that catalog layer info is not a proxy (#253, @Carifio24).
diff --git a/research-app/package.json b/research-app/package.json
index 0f8176ca..81f436c6 100644
--- a/research-app/package.json
+++ b/research-app/package.json
@@ -69,5 +69,5 @@
     "lint": "vue-cli-service lint src",
     "serve": "vue-cli-service serve"
   },
-  "version": "0.14.4"
+  "version": "0.15.0"
 }
diff --git a/research-app/src/App.vue b/research-app/src/App.vue
index 1339989b..87c048af 100644
--- a/research-app/src/App.vue
+++ b/research-app/src/App.vue
@@ -426,6 +426,8 @@ import {
 } from "@wwtelescope/research-app-messages";
 
 import {
+  convertEngineSetting,
+  isResearchAppEngineSetting,
   convertPywwtSpreadSheetLayerSetting,
   convertSpreadSheetLayerSetting,
 } from "./settings";
@@ -1970,9 +1972,10 @@ const App = defineComponent({
 
       const setting: [string, any] = [msg.setting, msg.value];
 
-      if (!isEngineSetting(setting)) return false;
+      if (!isResearchAppEngineSetting(setting)) return false;
+      const convertedSetting = convertEngineSetting(setting);
 
-      this.applySetting(setting);
+      this.applySetting(convertedSetting);
       return true;
     },
 
diff --git a/research-app/src/settings.ts b/research-app/src/settings.ts
index 83fb4d83..681b511a 100644
--- a/research-app/src/settings.ts
+++ b/research-app/src/settings.ts
@@ -7,7 +7,9 @@
 import {
   AltTypes,
   AltUnits,
+  BaseEngineSetting,
   CoordinatesType,
+  isBaseEngineSetting,
   MarkerScales,
   PlotTypes,
   PointScaleTypes,
@@ -16,6 +18,7 @@ import {
 
 import {
   Color,
+  EngineSetting,
   SpreadSheetLayer,
   SpreadSheetLayerSetting,
 } from "@wwtelescope/engine";
@@ -24,6 +27,31 @@ import {
   classicPywwt,
 } from "@wwtelescope/research-app-messages";
 
+
+export type ResearchAppEngineSetting = BaseEngineSetting |
+  ["altAzGridColor", string] |
+  ["eclipticColor", string] |
+  ["eclipticGridColor", string] |
+  ["equatorialGridColor", string] |
+  ["galacticGridColor", string] |
+  ["precessionChartColor", string];
+
+const researchAppEngineSettingTypeInfo = {
+  "altAzGridColor/string": true,
+  "eclipticColor/string": true,
+  "eclipticGridColor/string": true,
+  "equatorialGridColor/string": true,
+  "galacticGridColor/string": true,
+  "precessionChartColor/string": true,
+};
+
+export function isResearchAppEngineSetting(obj: [string, any]): obj is ResearchAppEngineSetting {  // eslint-disable-line @typescript-eslint/no-explicit-any
+  if (isBaseEngineSetting(obj)) return true;
+
+  const key = obj[0] + "/" + typeof obj[1];
+  return (key in researchAppEngineSettingTypeInfo);
+}
+
 function colValToIndex(layer: SpreadSheetLayer, colval: number | string): number {
   if (typeof colval === "number")
     return colval;
@@ -136,4 +164,22 @@ export function convertSpreadSheetLayerSetting(setting: SpreadSheetLayerSetting)
   }
 
   return setting;
-}
\ No newline at end of file
+}
+
+export function convertEngineSetting(setting: ResearchAppEngineSetting): EngineSetting {
+  if (setting[0] == "altAzGridColor") {
+    return [setting[0], Color.load(setting[1])];
+  } else if (setting[0] == "eclipticColor") {
+    return [setting[0], Color.load(setting[1])];
+  } else if (setting[0] == "eclipticGridColor") {
+    return [setting[0], Color.load(setting[1])];
+  } else if (setting[0] == "equatorialGridColor") {
+    return [setting[0], Color.load(setting[1])];
+  } else if (setting[0] == "galacticGridColor") {
+    return [setting[0], Color.load(setting[1])];
+  } else if (setting[0] == "precessionChartColor") {
+    return [setting[0], Color.load(setting[1])];
+  }
+
+  return setting;
+}