Darker edges on vertical color borders

[sudeten]

The colors that I have created appear to have darker edges so when applied to a vertical border the border color itself has darker edges (darker border color in the border color itself). Is there some setting that is causing this? How do I get my borders to be a consistent color? See attachments:

1. Color applied to a border -- has darker vertical edges
2. Color created in color picker -- has darker vertical edges

How do I get rid of the darker color edges?

[RoryOF]

I think you may be seeing manifestations of the Eberhard effect.

[sudeten]

Ok, I give, what is the "Eberhard Effect"? Can you describe and explain how to solve it? Thanks.

[RoryOF]

Yu have the keywords, look it up.

[sudeten]

I read the wikipedia article. But that does not address how to solve the problem in the color picker in Open Office.
The palettes that came with open office do not seem to have that problem. Soooo, where did the problem occur? How do I correct it?

[John_Ha]

It can also be an effect of astigmatism in your eyes. Rotate the screen (or your head) through 90 degrees. If the "old, light horizontal, but now vertical lines" appear darker it's time for a new pair of glasses.

Take a screen shot (press PrtScrn). Save the image in an image editor like IrfanView. Use a colour picker to measure each pixel's [R, G, B] colour values.

Test the colour picker on this image where, unbelievably, you will find that Square A and Square B have the identical colour values {97, 97, 97]. Square A and Square B are exactly the same colour.