What are the steps to reproduce?

• hamburger menu > subflows > create subflow
• 1 input, 1 output, connect the 2.
• edit properties, appearance tab
• change the color
• new subflow node appears with new color, deploy
• add new flow
• drag the subflow node into the flow
• deploy

What happens?

Subflow node changes color back to the original color (#DDAA99)
Refresh the browser and the node color is correctly shown as configured.

What do you expect to happen?

The subflow node should show the inital node color as configured.

Please tell us about your environment:

• Node-RED version:1.0.0
• Node.js version: v10.16.3
• npm version: 6.11.3
• Platform/OS: linux 4.19.0-6-amd64 Mobile/Tablet Support #1 SMP Debian 4.19.67-2+deb10u1 (2019-09-20) x86_64 GNU/Linux
• Browser: MacOS/Safari 13.0.1

Some screenshots