>>Let me rephrase it. :) I like it because it's faster but visual cue will be very helpful. :) It could be word Preview next to 'Category' field. Something like Preview.
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>I put something for now. I don't know about red as it is agressive.
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>>Also, I got an empty frame after the message:
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>Yes, that part is not done yet. I'll complete that tomorrow. Basically, if a validation message occurs, just hit back for now to go back to the message. This is the last thing that remain to be done for that conversion.

Yes, red is not good. I'm thinking that different distinct background for preview would be even better solution.