Question about blend()

Hi again,

sorry, I forgot the title in my previous message and I was not clear.

My question is simple : to blend an icon that has transparency I can do:

icon->blend(background_color);
icon->create();

But if the background color changes, then:

icon->blend(new_background_color);
icon->render();

doesn't changes the previous blending.

What I am missing?

Thanks,
JT

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