There is it seems a new Version of Stylish

References to new Stylish Logo here

Mozilla Addons/ AMO Ver 1.0.1 (May 4 ) Download link

There a number of not so positive reports on AMO to this Version

Old version better
by Kellchmia on May 5, 2009
I don’t want Jason to feel bad but I really like the old version.
Other users have mentioned the reasons.

Some Feedback to Version 1.0 (Jason Barnabe) Link

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Further more detailed comments on Version 1.0 here

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Please see more detailed comments on Version 1.0a here

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Please see more detailed comments on Version 1.0.1beta here

How to get old icons back, revert to previous version and other useful tips by Jason Barnabe (plus a thread devoted to the whole question) here

Stylish Nostalgia Icons here (uses old icons in new Version)

But effects icons both in status bar and addons panel.
But probably can be edited to suit, but have not tried as yet.

There are a number of facilities that are being permanently removed.

No important! button anymore.
No colorpicker either.

My sympathies are with Drugoy...

Two useful styles to go with Version 1.0.1

Stylish - Manage Window beautified

Stylish - Edit Window beautified

So modified by Stylish now becomes: