in elements, the sidebar where the css shows up sometimes has tan colored blocks. not sure if this is on purpose, but note that you have my small vote somewhat against this. could be worse though.

also, the 3 buttons on the top right of that panel get pretty invisible against the background, not sure if you can fix that.

is there a way to toggle or remove or make the white lines in the console more subtle?

If i am the minority on any of these opinions, I understand and no worries. Might have to do my own theme eventually to match my preferred theme ( https://github.com/zumbalogy/Themes-and-Settings/blob/master/Monokai_custom%20(copy).tmTheme )

chrome 31, linux mint 16 cinnamon.

As of Chrome 32 there is no Custom.css anymore (https://code.google.com/p/chromium/issues/detail?id=318566). I've tried porting the application to the new standards using this Stack Overflow thread: https://stackoverflow.com/questions/21207474/custom-css-has-stopped-working-in-32-0-1700-76-m-google-chrome-update but that's sadly not working. (You can try for yourself: https://github.com/MartijnDevNull/solarized-dark-skin-chrome-devtools) I don't know if there's a new theme, or this is deprecated but I thought I let you know.

When using this in v28 of Chrome it totally hoses the object viewing when in the console

Planned in January.

View Source is working though

When outputting a js object, I'm getting a broken image with a sprite before every line of log.

I'd attach a screenshot, but Github keeps failing on image upload.