dramatically enhance colors for javascript and css

[max-mapper]

Mr. Nyman and associates,

This pull request proposes subtle but important changes to the colors for JavaScript and CSS, updating them from their current colors, shown here:

And changing them to these:

The existing colors play on the traditional and played out red and blue motifs, whereas the updated colors, purple and yellow, are not only a more 21st century color color tuple choice but also each come from existing globally proven use cases.

#f7df1e, the yellow used to represent JavaScript in this pull request, is also known as "JavaScript yellow" as it is the official yellow used in the JS logo: https://github.com/jsconf/logo.js/blob/master/js.svg#L19

#563d7c, aka "bootstrap purple", is an obvious choice for a CSS color refresh as this hex code represents the iconic brand of the most popular stylesheet in the universe.

In preparation for this pull request I first analyzed the current color distribution across all languages (source available here):

As you can see, there are already a multitude of reds, yellows and purples, which assures me that these changes won't stand out relative to other colors used on GitHub today.

In closing I would like to leave you with this photo

[mdo]

Just going to go ahead and throw my undying support behind the CSS color change. <3

[arfon]

👍

[muan]

🐶

[mdo]

@arfon Was it intentional to only merge one commit and not the other? Only curious because our pull request header here shows that you merged two commits :).

Edit: Derp, I might be mistaken here given the merged commit reference above. <3

[arfon]

@mdo - I don't think I did anything wrong here but lemme know if something still isn't right 😄