Hi Juan,
Thank you for using Syncfusion products.
We have created and attached the sample to achieve your requirement of changing the header of the SfDatePicker and Foreground of Button. In the attached sample, we have set Header property of SfDateSelector using SelectorStyle property of SfDatePicker. We faced an issue while setting Foreground property of SfDateSelector as like Header property. We will be fixing this issue and the fix will be available in upcoming release. As of now, we have given a workaround in the attached sample by editing the template of SfDateSelector to customize the foreground of Button in SfDatePicker .
Please let us know if you have any queries.
Regards,
Swasthika Lakshmi I
App12_e42edf49.zip