How to use Eyedropper tool in Acrobat Reader?

Hello Valdemarasa,

As per the description above, you want to use the Eyedropper tool in Adobe Reader 10, Is that correct?

Sadly, there is no Eyedropper tool in Adobe Reader, however, you can use the Color Picker Tool in Commenting to choose any color. For more details, you may refer to Use annotation and drawing markup tools to add comments in PDFs, Adobe Acrobat and Acrobat Reader

Note: Adobe Reader 10 is already declared as an End of Support product, for more information refer to End of support for Acrobat X and Reader X

Feel free to update this discussion in case you need further assistance.

Regards,

Anand Sri.