IE6 : we can't clearly see whether a check box checked or not on any dialog

[Satya Minnekanti]

To reproduce the defect:

Open any CK Editor sample, open Find Dialog and look at the check boxes on Find and replace dialog

Expected Result: Match cyclic check box should be checked and shown clearly

Actual Result: Match cyclic check box i checked but it's not shown clearly

Same issue happens with all check boxes on all dialogs ( Flash, IFrame)

This has been happening from rev 7222

I have added screen shots of Find dialog for rev7221 and rev7222

[Jakub Ś]

Reproducible on IE6 from rev [7222]

[Frederico Caldeira Knabben]

The proposed patch code looks good, but if we use white on it, the checkboxes inner background will be transparent (gray with kama).

Go ahead committing, but please change it to "red" instead and it should work well.

[Garry Yao]

Fixed with [7257].