Various fixes

js/entity/ColorChannelValueEntity.js

@@ -0,0 +1,15 @@
+import Utility from "../Utility"
+import IntegerEntity from "./IntegerEntity"
+
+export default class ColorChannelValueEntity extends IntegerEntity {
+
+    static attributes = {
+        value: Number,
+    }
+
+    /** @param {Object | Number | String} options */
+    constructor(options = 0) {
+        super(options)
+        this.value = Utility.clamp(this.value, 0, 255)
+    }
+}