Improve readability of comic status in Favorites page

[tardypad]

The status are currently displayed with a black foreground over a background colored with a darker version of the comic color. In many cases, this leads to a really poor contrast when the background gets too dark

Here is a proposed way that would solve it a priori:

• add to each comic info.json a new field called "titleColor" which contains the color of the title of the comic in its cover.
• use this new title color as the foreground color for the status icon and text (still over a darker background color)

The title color and background color in the covers were almost always chosen so as to have a nice contrast between each other