Challenge 7 - Adding Configurable Options

Version 1

    1. In sym-archivedata.js, add default configuration options for decimal places, background color, and border radius
    2. Set the default background color to #ff5733.
    3. In sym-archivedata-template.html, add NgStyle directives to apply the styles specified in the js file.

    Extra Credit:
    Add a mouseover handler to change the background color on mouseover