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# What\'s new in Matplotlib 1.2.2 {#whats-new-1-2-2}

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Table of Contents
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## Improved collections

The individual items of a collection may now have different alpha values
and be rendered correctly. This also fixes a bug where collections were
always filled in the PDF backend.

## Multiple images on same axes are correctly transparent

When putting multiple images onto the same axes, the background color of
the axes will now show through correctly.