140964 - Hex colour in PNG image does not match background colour

Status: RESOLVED DUPLICATE of bug 75133

(Core :: Layout, defect)

Description

[jdv]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0rc1)
Gecko/20020417
BuildID:    2002041712

Due to inconsistent behaviour with true alpha channel use in PNG images, I
typically make the background of PNG images match the HTML background.  This has
work well for me until RC1 on Mac OS X (OS 9 untested).

The result is that setting a background colour and placing a PNG image with the
same colour on top of the background results in an obvious difference.

I have no idea if this is a problem with my PNG, or the background colour I use
in the style.  It worked ok up to 0.99, and no other platform I run RC1 on has
this problem (Win2K, Linux).

Reproducible: Always
Steps to Reproduce:
1. Browse to http://www.clevermonkey.org/test/pngtest.html, or possibly any page
that has PNG images that expect to match a background property.


Actual Results:  As per 0.99, I'd expect the backgrounds of the images and the
page to blend into one.

Expected Results:  I'd expect the background property colour to match the same
colour used to create images.

The results I'm seeing are identical to IE 5.1 on the Mac, before tweaking the
"Protocol Helpers" to handle PNG images internally.

Comment 1

[Christopher Aillon (sabbatical, not receiving bugmail)]

*** This bug has been marked as a duplicate of 75133 ***