This is pretty minor, but it caused me some confusion. I thought my macro name field was broken until I clicked on some colors and realized what was happening.
Here is how it is on blue, and was on green before today's patch:
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Default text in the macro prompt is white. When you produce a macro with this, the macro text on the resultant button is black.
Here is how it is on green now:
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Default text in the macro prompt is black, almost invisible. Clicking on a color makes it visible, of course.
If the macro edit window was the classic stone/marble background one, I think the default text should indeed be black, but with the velious one we're using, it's just hard to see.
edit: posted in the ui discussion thread also