propscreen.zp_pageframe1.page1.lblExist_use.Caption =
"Warning"
propscreen.zp_pageframe1.page1.lblExist_use.Forecolor = RGB(255,0,0)
The first line changes the label for the Existing Use field on the Property Screen to "Warning." The second line makes that label red. To change the color of a field you enter in three Red/Green/Blue values from 0 to 255. Different values produce the rainbow of colors. You can use a number of web sites to learn the RGB values for any color you desire.