diff --git a/docs/api/cautious-journey.flaglabel.md b/docs/api/cautious-journey.flaglabel.md
index 776f07a..e47f1ee 100644
--- a/docs/api/cautious-journey.flaglabel.md
+++ b/docs/api/cautious-journey.flaglabel.md
@@ -13,3 +13,9 @@ export interface FlagLabel extends BaseLabel, ChangeSet
 ```
 <b>Extends:</b> BaseLabel, ChangeSet
 
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [requires](./cautious-journey.flaglabel.requires.md) | Array&lt;unknown&gt; |  |
+
diff --git a/docs/api/cautious-journey.flaglabel.requires.md b/docs/api/cautious-journey.flaglabel.requires.md
new file mode 100644
index 0000000..710b2f3
--- /dev/null
+++ b/docs/api/cautious-journey.flaglabel.requires.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [cautious-journey](./cautious-journey.md) &gt; [FlagLabel](./cautious-journey.flaglabel.md) &gt; [requires](./cautious-journey.flaglabel.requires.md)
+
+## FlagLabel.requires property
+
+<b>Signature:</b>
+
+```typescript
+requires: Array<unknown>;
+```
diff --git a/docs/api/cautious-journey.statelabel.md b/docs/api/cautious-journey.statelabel.md
index b91a9ff..aa40614 100644
--- a/docs/api/cautious-journey.statelabel.md
+++ b/docs/api/cautious-journey.statelabel.md
@@ -9,9 +9,9 @@ Grouped labels: the equivalent of a radio group.
 <b>Signature:</b>
 
 ```typescript
-export interface StateLabel extends BaseLabel, ChangeSet 
+export interface StateLabel extends BaseLabel 
 ```
-<b>Extends:</b> BaseLabel, ChangeSet
+<b>Extends:</b> BaseLabel
 
 ## Properties
 
diff --git a/docs/api/cautious-journey.statevalue.md b/docs/api/cautious-journey.statevalue.md
index 1775ee1..3de7e63 100644
--- a/docs/api/cautious-journey.statevalue.md
+++ b/docs/api/cautious-journey.statevalue.md
@@ -9,9 +9,9 @@ One of many values for a particular state.
 <b>Signature:</b>
 
 ```typescript
-export interface StateValue extends BaseLabel 
+export interface StateValue extends BaseLabel, ChangeSet 
 ```
-<b>Extends:</b> BaseLabel
+<b>Extends:</b> BaseLabel, ChangeSet
 
 ## Properties
 
diff --git a/docs/api/cautious-journey.syncoptions.md b/docs/api/cautious-journey.syncoptions.md
index e1a096a..5683f2e 100644
--- a/docs/api/cautious-journey.syncoptions.md
+++ b/docs/api/cautious-journey.syncoptions.md
@@ -18,6 +18,7 @@ export interface SyncOptions
 |  [flags](./cautious-journey.syncoptions.flags.md) | Array&lt;[FlagLabel](./cautious-journey.flaglabel.md)<!-- -->&gt; |  |
 |  [logger](./cautious-journey.syncoptions.logger.md) | Logger |  |
 |  [project](./cautious-journey.syncoptions.project.md) | string |  |
+|  [random](./cautious-journey.syncoptions.random.md) | prng |  |
 |  [remote](./cautious-journey.syncoptions.remote.md) | [Remote](./cautious-journey.remote.md) |  |
 |  [states](./cautious-journey.syncoptions.states.md) | Array&lt;[StateLabel](./cautious-journey.statelabel.md)<!-- -->&gt; | States from project config. |
 
diff --git a/docs/api/cautious-journey.syncoptions.random.md b/docs/api/cautious-journey.syncoptions.random.md
new file mode 100644
index 0000000..ae78280
--- /dev/null
+++ b/docs/api/cautious-journey.syncoptions.random.md
@@ -0,0 +1,11 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [cautious-journey](./cautious-journey.md) &gt; [SyncOptions](./cautious-journey.syncoptions.md) &gt; [random](./cautious-journey.syncoptions.random.md)
+
+## SyncOptions.random property
+
+<b>Signature:</b>
+
+```typescript
+random: prng;
+```
diff --git a/src/labels.ts b/src/labels.ts
index 3631aea..89b7f7d 100644
--- a/src/labels.ts
+++ b/src/labels.ts
@@ -31,16 +31,23 @@ export interface BaseLabel {
    * Display color.
    */
   color?: string;
+
+  /**
+   * Long-form description.
+   */
   desc?: string;
+
+  /**
+   * Label priority.
+   */
   priority: number;
-  requires: Array<LabelRef>;
 }
 
 /**
  * Individual labels: the equivalent of a checkbox.
  */
 export interface FlagLabel extends BaseLabel, ChangeSet {
-  /* empty */
+  requires: Array<LabelRef>;
 }
 
 /**
@@ -56,7 +63,7 @@ export interface StateChange extends ChangeSet {
 /**
  * One of many values for a particular state.
  */
-export interface StateValue extends BaseLabel {
+export interface StateValue extends BaseLabel, ChangeSet {
   /**
    * State changes that could occur to this value.
    */
@@ -66,7 +73,7 @@ export interface StateValue extends BaseLabel {
 /**
  * Grouped labels: the equivalent of a radio group.
  */
-export interface StateLabel extends BaseLabel, ChangeSet {
+export interface StateLabel extends BaseLabel {
   /**
    * Values for this state.
    */
@@ -121,17 +128,15 @@ export function prioritySort<TLabel extends BaseLabel>(labels: Array<TLabel>): A
 
 /**
  * Pick a label color, preferring the label data if set, falling back to a randomly selected color.
- *
- * TODO: this is a terrible overload
  */
 export function getLabelColor(colors: Array<string>, random: prng, flag: FlagLabel): string;
 export function getLabelColor(colors: Array<string>, random: prng, state: StateLabel, value: StateValue): string;
 export function getLabelColor(colors: Array<string>, random: prng, label: BaseLabel, value?: StateValue): string {
-  if (doesExist(value) && doesExist(value.color)) {
+  if (doesExist(value) && doesExist(value.color) && value.color !== '') {
     return value.color;
   }
 
-  if (doesExist(label.color)) {
+  if (doesExist(label.color) && label.color !== '') {
     return label.color;
   }
 
diff --git a/src/utils.ts b/src/utils.ts
index a863e04..bfe75d7 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -15,6 +15,6 @@ export function defaultUntil<T>(...items: Array<Optional<T>>): T {
 }
 
 export function randomItem<T>(items: Array<T>, source: prng): T {
-  const idx = Math.floor(source() * items.length);
+  const idx = source.int32() % items.length;
   return items[idx];
 }
diff --git a/test/TestLabels.ts b/test/TestLabels.ts
index 54ec9fc..49dc6aa 100644
--- a/test/TestLabels.ts
+++ b/test/TestLabels.ts
@@ -1,6 +1,7 @@
 import { expect } from 'chai';
+import { alea } from 'seedrandom';
 
-import { getLabelNames, prioritySort } from '../src/labels';
+import { getLabelColor, getLabelNames, prioritySort } from '../src/labels';
 
 describe('label helpers', () => {
   describe('label name helper', () => {
@@ -30,23 +31,21 @@ describe('label helpers', () => {
 
     it('should return all states', () => {
       const values = [{
+        adds: [],
         becomes: [],
         name: 'bin',
         priority: 1,
+        removes: [],
         requires: [],
       }];
       const states = [{
-        adds: [],
         name: 'foo',
         priority: 1,
-        removes: [],
         requires: [],
         values,
       }, {
-        adds: [],
         name: 'bar',
         priority: 1,
-        removes: [],
         requires: [],
         values,
       }];
@@ -92,4 +91,59 @@ describe('label helpers', () => {
       expect(sorted[0]).to.deep.equal(FIRST_LABEL);
     });
   });
+
+  describe('label color helper', () => {
+    it('should return the value color', () => {
+      expect(getLabelColor(['test'], alea(), {
+        color: 'beans',
+        name: '',
+        priority: 1,
+        values: [],
+      }, {
+        adds: [],
+        becomes: [],
+        color: 'not',
+        name: '',
+        priority: 1,
+        removes: [],
+      })).to.equal('not');
+    });
+
+    it('should return the state color when value color is unset', () => {
+      expect(getLabelColor(['test'], alea(), {
+        color: 'beans',
+        name: '',
+        priority: 1,
+        values: [],
+      }, {
+        adds: [],
+        becomes: [],
+        color: '',
+        name: '',
+        priority: 1,
+        removes: [],
+      })).to.equal('beans');
+    });
+
+    it('should return the flag color', () => {
+      expect(getLabelColor(['test'], alea(), {
+        adds: [],
+        color: 'not',
+        name: '',
+        priority: 1,
+        removes: [],
+        requires: [],
+      })).to.equal('not');
+    });
+
+    it('should return a random color when the flag color is unset', () => {
+      expect(getLabelColor(['test'], alea(), {
+        adds: [],
+        name: '',
+        priority: 1,
+        removes: [],
+        requires: [],
+      })).to.equal('test');
+    });
+  });
 });