Fix type error

packages/insomnia-app/app/plugins/misc.js

@@ -138,14 +138,9 @@ function getThemeBlockCSS(block?: ThemeBlock): string {
 
     try {
       const parsedColor = Color(value);
-      addVar(variable, parsedColor.rgb().string());
-      addVar(
-        `${variable}-rgb`,
-        parsedColor
-          .rgb()
-          .array()
-          .join(', '),
-      );
+      const rgb = parsedColor.rgb();
+      addVar(variable, rgb.string());
+      addVar(`${variable}-rgb`, rgb.array().join(', '));
     } catch (err) {
       console.log('Failed to parse theme color', value);
     }

packages/insomnia-app/flow-typed/color.js

@@ -2,9 +2,14 @@
 
 declare class Color {
   constructor(cssColor: string): Color;
-  rgb: () => Object;
+  rgb(): Object;
 }
 
 declare module 'color' {
-  declare module.exports: typeof NeDB;
+  declare module.exports: (cssColor: string) => {
+    rgb: () => {
+      array: () => Array<number>,
+      string: () => string,
+    },
+  }
 }