fix(a11y): Improve color swatch text contrast for WCAG 2 AA compliance (#3510)

* fix(a11y): Improve color swatch text contrast for WCAG 2 AA compliance

Change unselected color swatch text from gray.200 to gray.600 to meet
the minimum contrast ratio of 4.5:1 against white backgrounds.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* trigger ci

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: kevinxh

packages/template-retail-react-app/app/theme/components/project/swatch-group.js

@@ -41,7 +41,7 @@ export default {
                 marginRight: 2,
                 marginLeft: 0,
                 marginBottom: 2,
-                color: `${props.selected ? 'black' : 'gray.200'}`,
+                color: `${props.selected ? 'black' : 'gray.600'}`,
                 border: `${props.selected ? '1px' : '0'}`,
                 _hover: {
                     borderColor: `${props.selected ? 'black' : 'gray.200'}`,