ssb: Add a manual theme color picker.

apps/ssb/emojis.js

@@ -1,6 +1,6 @@
 import * as tfrpc from '/static/tfrpc.js';
 import {html, render} from './lit-all.min.js';
-import {styles} from './tf-styles.js';
+import {styles, generate_theme} from './tf-styles.js';
 
 let g_emojis;
 
@@ -140,6 +140,9 @@ export async function picker(callback, anchor, author, recent) {
 		<style>
 			${styles}
 		</style>
+		<style>
+			${generate_theme()}
+		</style>
 		<div
 			class="w3-modal"
 			style="display: block; box-sizing: border-box; z-index: 10"