You could try a forced rebuild. Repeat the changes from the beginning > exit the property manager > then hold down the
CNTL key and press the "B" key at the same time. CNTL+B.
Make sure that the Line Color in the Line Format toolbar shows the object(s) as using the Default color.
A few things to check:
1. See if the Color Display Mode button is depressed on the Line Format toolbar.
2. Click on one of the notes to highlight it and click on the Line Color button on the Line Format toolbar. If the box for "Default" isn't checked, check it.
3. Click on the Layer Properties button on your Layers toolbar and make sure they're assigned the correct colors.
Ok, thanks for all the suggestions but it was my bad. color display mode was off.