An embedded color wheel appears to extinguish when observers fix their eyes on the cross.pic.twitter.com/6BWmWl8KKG
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
A color wheel appears to extinguish when observers look at the cross.pic.twitter.com/uVlgQjNXhC
A gray ring appears to extinguish when observers fixate at the cross.pic.twitter.com/G7mqQ3s2Z1
濃いタイプは消え残りますね。
What I found weird is that if you unfocus your eyes you get the opposite, the color wheel gets more visible!
Strange. For my eyes the first one worked much better than the one you said was much better.
Sorry, not first. I meant the light coloured background one.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.