Found that copying and pasting any HEX color value when setting a bone color doesn't work, manually setting the color using the sliders works though.
OS: Windows 10
Spine version: 4.0.43-beta
Steps to reproduce:
- Create new empty project.
- Select the "root" bone and click in the "Color" button in the tree view to change its color.
- Paste any color HEX value in the popup window, e.g. "FF0000FF"
- Click "Ok".
- Color is not applied.