allow user to customize the theme colors

[BrijeshSajeev]

Colors Used:

• text-blue-700
• text-blue-400
• text-blue-600
• text-blue-700
• text-blue-700
• text-blue-600
• bg-blue-50
• bg-blue-100
• bg-blue-500
• bg-blue-50
• bg-blue-500
• bg-blue-500
• bg-blue-100
• border-blue-500
• border-blue-200