Fix extra row bug on even number of colors

[NelzkieLabs]

Description

Fix bug where an extra row is added on color chooser when the number of colors on list is even

Type of change

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

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit and screenshot tests pass locally with my changes