Ahoi,
as the topic title says, the fill- and stroke color on a rectangle in a schematic won't save ( anymore ).
Steps to reproduce:
1. Open a schematic
2. Add a rectangle by using the "flying" "Drawing Tools"
3. Select the rectangle and change the fill- and/or the stroke color
4. Hit "Save"
5. Close the schematic
6. Reopen the schematic => The color properties were not saved. Will always reset to the initial values to `#000000` and `#880000`.

Using EasyEDA v6.4.7 Desktop Version
<br>
<br>
Edge Chromium
90.0.796.0
Windows
10
EasyEDA
6.4.7