Fix issue 4645

[cocarmon]

New Pull Request

Fix getShadeColor() handling of RGB values. Ensure hexToRgba receives a hex value by checking if the shadeColor() output is in RGB format; convert to hex if necessary before passing to hexToRgba.

Fixes # (issue)
#4645

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• My branch is up to date with any changes from the main branch