Color picker is broken

These are some of the issues I've experienced with color picker:

1. File picker refuses to open when clicked on (editing the numbers by hand sometimes fixes that)
2. When file picker refuses to open, clicking on it multiple times can freeze intellij UI.
3. Hot reload using ctrl-s doesn't work after editing colors
4. Hot reload fails with an error saying "analysis errors", even though there are none (editing something else in file fixes that)

This is a screencast that reproduces some of them.

https://github.com/user-attachments/assets/4f744e2b-83a0-4445-bea5-d6ad6d898310

Start by reproducing the color picker and hot reload problems using the linked screencast, then trace the color picker and Ctrl-S hot reload entry points in the IntelliJ plugin. Done means the picker opens reliably, repeated clicks do not freeze the UI, and color edits hot reload without requiring unrelated file changes or reporting false analysis errors.

Written by the indexing model from the issue text.