Hi Racheal,
Sorry for the delay in getting back to you.
We couldn't able to reproduce the issue as you mentioned. In the QueryCellStyleInfo event the textcolor of an cell was changing well even if we set the CellValueType as "System.Int32". To ensure this we have attached one sample for your references. If anything we made wrong please correct us.
GridFormatSample*In our sample, we change the textcolor of an cell as "Red" if CellValue of "pub_id" is less than "0877".
Let us know if our sample helps.
Thanks for your patience.
Regards,
Gokulkumar.B