Change color on all forms

In the AOT, locate the SysSetupFormRun class and modify the run() method. After the super() method, you can add either snippet of code to change the color on all forms.

this.design().colorScheme(FormColorScheme::RGB);
//set background color to yellow
this.design().backgroundColor(0x63F2F2);

Or, if you would like to change it based on the current company account you are in, you can do something like this.

switch (curext())
    {
        case "SAV1":
            this.design().backgroundColor(0x6E966B);  //green
            break;
        case "SAV2":
            this.design().backgroundColor(0x63F2F2);  //yellow
            break;
        case "SAV3":
            this.design().backgroundColor(0xA35D4D);  //blue
            break;
        case "SAV4":
            this.design().backgroundColor(0xA3838B);  //purple
            break;
        default:
            break;
    }