created an attachment (id=160759)
screenshot

description:
the icon for expression builder is not the same as others in "select image" dialogue, and the tooltip for the button should be updated.

build number:
2.6.0.v20100303-0630

steps to reproduce:
1. new a pie chart, go to "format chart" tab.
2. series->value series.
3. check the icon for expression builder after "explode slice when".

expected result:
the icon and tooltip for expression builder is the same as others.

actual result:
see the screenshot.

error log:
n/a
fixed. update the expression builder icon.
verified in build (2.6.0.v20100318-1009), closed.