How to correct for dual color casts?

It seems that I have a slight warm color cast from the top of my image down and a slight cool color cast from the bottom of my image up. The center area is color neutral. How to I correct for these color casts?
I tried an adjustment layer with linear gradients added of very pale red to transparent to kill the cool in the bottom half and a linear gradient of very pale blue to transparent to kill the warm in the upper half. The color was somewhat neutralized, but now the top and bottom are even darker, more saturated.
I'm thinking I need something like a gradient "photo filter" for Photoshop?
Anyone know the quick way to solve this problem?
Thanks,
J

I just answered my own question: I changed the color of the Dodge Tool to pale Red and took out the cool cast and now I'm going to change the color to a cool color and take out the warm cast.
Sorry.
J

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Message title was edited by: Brett N

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progster wrote:
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Hi,
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dorffersmatt wrote:
Interestingly, my e-mail says there was another post about how to reduce the purple cast with proper in-camera settings, but now that post seems to have been deleted (by the poster? by somebody at Adobe?)
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dorffersmatt wrote:
1) You said that you sometimes see the purple cast with your D4 and D810 if the white balance isn't set properly. What would you consider a proper white balance setting for a situation such as this one? It was the dress rehearsal for a play, with constantly shifting lighting. I just left the white balance on "Auto"; how would you have approached the situation?
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dorffersmatt wrote:
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http://www.braintrove.com/article/58
Greg Collins
Microsoft MVP
Visit Braintrove at http://www.braintrove.com

None taken. I am unfamiliar with ACR and would love to see (compare) what it
could do with the sample PNG file in the article, and how much time it took.
The results I achieved in the article took only a few minutes to
complete--though as I mention below, it took more than a few minutes to get
to the point where I could do it in a few minutes.
I happened across a web site one day discussing the techniques in Margulis'
LAB Color book, which interested me enough to purchase it. I found the book
very enlightening and have seen incredible results using the techniques he
describes as applied to my various images. I've also ready his Professional
Photoshop book which focuses more on CMYK, and found many techniques in
there just as enlightening.
Ultimately the tools and techniques used are irrelevant if you get the
results you want... but if you find one that works faster, easier or better,
then certainly you should employ it.
I have no problem working in RGB, CMYK or LAB and find benefits from each.
The particular sample image I used in the article was one that I've spent
(too much) time cleaning up in various ways and in various color spaces (or
combinations thereof). It became my "poster child" image to work on as I
continue to build my Photoshop skills. The approach I used in the article
was the one I found most to be the fasted with the most effective results.
The original was a 6MP JPG file. I reduced it to the size in the article and
then worked on that size for the remaineder of the article. The resutls are
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Greg Collins
Microsoft MVP
Visit Braintrove at http://www.braintrove.com

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It is best to get a professionally balanced LCD or CRT display for color correction.
WHY? Here is the BARNEY explaination:
Go to Best Buy, Circuit City...Sears...and look at all the LCD and plasma TVs. Notice that not one matches the other in color. Many waaaayyy off.
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