Standardize errors, warnings, info & success colors

[nikhil-varma]

This pull request updates the color palettes for both the dark and light themes by replacing color imports with hardcoded color values and adding detailed state-specific color properties for semantic colors (error, warning, info, success). This change improves consistency, simplifies theme configuration, and enhances UI state styling.

Theme color palette updates:

• Replaced color imports (such as red, orange, teal, and lightBlue) with direct hardcoded color values for semantic colors in both dark-theme.js and light-theme.js, leading to more predictable and maintainable color definitions. [1] [2]
• Added a _states object to each semantic color (error, warning, info, success) defining colors for UI states like hover, selected, focus, focusVisible, and outlinedBorder, improving visual feedback and accessibility. [1] [2]

Palette consistency and contrast improvements:

• Updated contrastText values for all semantic colors to #fcfdff for better text readability across both themes. [1] [2]

This ensures both Cloud UI and Web UI uses the same color themes for Error/Info/Success/Warning

Alerts

SnackBars

Chip

[nikhil-varma]

@trean @generall Requesting your reviews