Not the most polished theme, and kinda messy css, but good for everyday use. Should look good in all views.
Tested in Firefox 37, Chromium 41, may contain bugs and some weird stuff. If you find something strange — please report, and I'll try to fix it.
Now with styles for Next-Prev Toolbar — http://tt-rss.org/forum/viewtopic.php?f=22&t=1659
Theme preview:

Toolbar preview:

Theme installation:
Zip with theme is in attachments (storm_024.zip), simply unzip it to themes folder and select “storm2.css” under Theme in Preferences. Hope you will enjoy it.
Next-Prev Toolbar style installation:
First you need to have installed Next-Prev Toolbar — link above.
Zip with styles for article_toolbar (storm_article_toolbar_01.zip) also in attachments, two folders inside — “article_toolbar” for big icons and “article_toolbar_small” for small icons.
Unzip it to your plugins folder in to respective folders with overwriting of existing css. Make a bakup before unzipping, if you want.
Changelog:
[2015.03.18] - v. 0.2.7
- updated to be compatible with 1.15.3 version of TTRSS, not much changed
[2013.06.13] - v. 0.2.4
- updated to be compatible with 1.9 version of TTRSS, few improvements;
- cleaned up a bit
[2013.07.12] - v. 0.2.3
- small updates and cleanup, icons size reduced;
- Open Sans Condensed for articles headers;
- should look much better in all views;
- mild highlighting of currently active article;
- more images replaced
[2013.06.27] - v. 0.2.2
- feed icons greyscaling restricted to sidebar;
- added styles for article_toolbar (small & big), icons from FatCow Web Hosting icons set
[2013.06.26] - v. 0.2.1
- replaced “Collapse feedlist” button with image
[2013.06.13] - v. 0.2
- updated to be compatible with 1.8 version of TTRSS, few improvements;
- replaced icons in Special folder with new, from FatCow Web Hosting icons set;
- icons in sidebar now grey until row hovered/selected
[2013.05.20] - v. 0.1
- initial release