Change the listing text color to black from grey

[mahalakshme]

Need:

In the mockups it seems to be black. Having grey color, with the existing dark color bg, makes the text less visible and more card colors need to be changed.

AC:

Change the card list view text color to black, similar to that of card tile view.

[himeshr]

@mahalakshme have kept the description color same for tile and list. Its now set to same value as that was there previously for Tile View. But its not black, its hexcode is #333333.

[himeshr]

Minor code change, no code-review required.

[mahalakshme]

@himeshr please make it black, with #333333 more card colors(like #3e50b4, #0f6560) need to be changed. I did the checking using here and hence suggested black

[himeshr]

Set both to be black by default.