Remember colormap

src/app/Analytics.ts

@@ -1,3 +1,4 @@
+import type { ColormapType } from './previews/Colormap.js'
 import type { VersionId } from './services/index.js'
 
 type Method = 'menu' | 'hotkey'
@@ -110,6 +111,12 @@ export namespace Analytics {
 		})
 	}
 
+	export function setColormap(colormap: ColormapType) {
+		gtag('set', {
+			colormap,
+		})
+	}
+
 	export function resetGenerator(file_type: string, history: number, method: Method) {
 		event(ID_GENERATOR, 'reset')
 		gtag('event', 'reset_generator', {