Picasa Start-7 

Click the Tuning Tab
to Make Adjustments to your Image.
 

Highlights Adjusted

 

AdjustHighLilac.jpg (209215 bytes)
Shadows Adjusted

Note the Overall Yellow Color of the Image.

This needs to be corrected.

AdjustShadowsLilac.jpg (323515 bytes)
By Sliding the 
Color Temperature
Handle
to the Left
I have Corrected the Color.

 

 

Sliding Left makes the Image Cooler.AdjustColorTempLilac.jpg (279115 bytes)
Sliding Right makes it Warmer.

Use the “Pick Color” dropper to define the area that Picasa will see as Gray or White.

This may or may not be a good idea!

 

ColorPicker.jpg (241396 bytes)
Picasa will balance all the colors surrounding that selection according to the selected color.
Here is the Image before Modification! AdjustHighLilac.jpg (209215 bytes)