Jesper, of waffle software, does not like what he sees (or, can not see) with the initial Pixelmator release for Mac OS X:
Do not make all the tools have really dark icons! The Type tool, the Crop tool and the Cursor/Move tool all have generally black icons. When the icons are unselected, they’re black, put against a black background, which actually is semi-transparent and may overlay a black backdrop; add that I’m clicking it with a black cursor carrying a black shadow. It’s like Hotblack’s fucking stunt ship. When the icons are selected, they are slightly bigger and put against a semi-transparent grey background. This is not helping very much.