增加展示颜色分量单位功能。

src/components/ColorRangePicker.tsx

@@ -6,6 +6,7 @@ import styles from './ColorRangePicker.module.css';
 type ColorRangePickerProps = {
   title: string;
   value?: number;
+  unit?: string;
   onChange: (value: number) => void;
   gradient: string;
   min?: number;
@@ -17,6 +18,7 @@ type ColorRangePickerProps = {
 export function ColorRangePicker({
   title,
   value = 0,
+  unit,
   onChange,
   gradient,
   min = 0,
@@ -41,7 +43,10 @@ export function ColorRangePicker({
     <div className={styles.picker_container}>
       <div className={styles.title_row}>
         <label>{title}</label>
-        <span>{pickerValue}</span>
+        <span>
+          {pickerValue}
+          {unit}
+        </span>
       </div>
       <input
         type="range"