You can return your speedcam icons to "normal" by replacing all speedwarn*.bmp files in skin.zip/ui_android/"your resolution" with the ones in the same folder in data.zip.
Be sure to check the icons are in the same order in the strip, and that the strip is exactly the same size. DView app is excellent for viewing and resizing the strip.
If the icons are in a different order in the strip you will have to rearrange them - fiddly but not impossible.
All the usual rules for editing iGO .zip files should be followed.
I have done this with Doupas skin - sorry Andreas your icons are beautiful but too big for my screen.

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