Cleanup color theme

[StefKors]

1. Replace hard coded colors with theme colors
2. Enable dark/light theme toggle in storybook (@sradevski)
3. Reduce amount of colors
4. Rename colors to what the color is used for (needs discussion)

• Primary

  • main
  • disabled
  • hover

• Page Background

  • main
  • hover

• Card Background

  • main
  • hover

• Text

  • main
  • disabled
  • hover

• Success

  • main
  • disabled
  • hover

• Danger

  • main
  • disabled
  • hover

• Warning

  • main
  • disabled
  • hover

• Hover

  • main
  • disabled
  • hover

Example of constrained design system: https://polaris.shopify.com/