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Alternating Row Colors in Interactive Report

In APEX, using an 'old-fashioned' report, you can create alternating row colors out of the box. But when you want to use the Interactive Report (IR) features, you can't do that anymore. But some people still have that need, according to this question on the Forum.
The main problem is that you can filter and re-order the resultset on the fly, so you can't define the coloring using the onload method of the page, because that's only fired once.
But when you have a Link Column in your report you can use the onload event of the image in that link :
<img src="#IMAGE_PREFIX#edit.gif" alt="" onLoad="Alternate(this);">
And define in your Page HTML Header:

You can see the colorful result here:

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