Error after updating to latest PSU

Good morning all,

Wanted to check if any of you are having this error below after updating from 2.2.0 to latest 2.5.3

Seems it won’t load the theme file I’ve been using for the longest. Is just a simple green colored theme.

@{
    light = @{
        palette = @{
            Common = @{
                black = '#000'
                white = '#fff'
            }
            primary = @{
                main = '#939b38'
                light = '#7986cb'
                dark = '#303f9f'
                contrastText = '#fff'
            }
            secondary = @{
                light = '#ff4081'
                main = '#f50057'
                dark = '#c51162'
                contrastText = '#fff'
            }
            error = @{
                light = '#e57373'
                main = '#f44336'
                dark = '#d32f2f'
                contrastText = '#fff'
            }
            warning = @{
                light = '#ffb74d'
                main = '#ff9800'
                dark = '#f57c00'
                contrastText = 'rgba(0, 0, 0, 0.87)'
            }
            info = @{
                light = '#64b5f6'
                main = '#2196f3'
                dark = '#1976d2'
                contrastText = '#fff'
            }
            success = @{
                light = '#81c784'
                main = '#4caf50'
                dark = '#388e3c'
                contrastText = 'rgba(0, 0, 0, 0.87)'
            }
            grey = @{
                50 = '#fafafa'
                100 = '#f5f5f5'
                200 = '#eeeeee'
                300 = '#e0e0e0'
                400 = '#bdbdbd'
                500 = '#9e9e9e'
                600 = '#757575'
                700 = '#616161'
                800 = '#424242'
                900 = '#212121'
                A100 = '#d5d5d5'
                A200 = '#aaaaaa'
                A400 = '#303030'
                A700 = '#616161'
                contrastThreshold = '3'
                getContrastText = 'f E()'
                augmentColor = 'f B()'
                tonalOffset = '0.2'
            }
            text = @{
                primary = '#fff'
                secondary = 'rgba(255, 255, 255, 0.7)'
                disabled = 'rgba(255, 255, 255, 0.5)'
                hint = 'rgba(255, 255, 255, 0.5)'
                icon = 'rgba(255, 255, 255, 0.5)'
                divider = 'rgba(255, 255, 255, 0.12)'
            }
            background = @{
                default = '#303030'
                paper = '#424242'
            }
            action= @{
                active = '#fff'
                hover = 'rgba(255, 255, 255, 0.08)'
                hoverOpacity = '0.08'
                selected = 'rgba(255, 255, 255, 0.16)'
                selectedOpacity = '0.16'
                disabled = 'rgba(255, 255, 255, 0.3)'
                disabledBackground = 'rgba(255, 255, 255, 0.12)'
                disabledOpacity = '0.38'
                focus = 'rgba(255, 255, 255, 0.12)'
                focusOpacity = '0.12'
                activatedOpacity = '0.24'
            }
        }
    }
    dark = @{
        palette = @{
            Common = @{
                black = '#000'
                white = '#fff'
            }
            primary = @{
                main = '#939b38'
                light = '#7986cb'
                dark = '#303f9f'
                contrastText = '#fff'
            }
            secondary = @{
                light = '#ff4081'
                main = '#f50057'
                dark = '#c51162'
                contrastText = '#fff'
            }
            error = @{
                light = '#e57373'
                main = '#f44336'
                dark = '#d32f2f'
                contrastText = '#fff'
            }
            warning = @{
                light = '#ffb74d'
                main = '#ff9800'
                dark = '#f57c00'
                contrastText = 'rgba(0, 0, 0, 0.87)'
            }
            info = @{
                light = '#64b5f6'
                main = '#2196f3'
                dark = '#1976d2'
                contrastText = '#fff'
            }
            success = @{
                light = '#81c784'
                main = '#4caf50'
                dark = '#388e3c'
                contrastText = 'rgba(0, 0, 0, 0.87)'
            }
            grey = @{
                50 = '#fafafa'
                100 = '#f5f5f5'
                200 = '#eeeeee'
                300 = '#e0e0e0'
                400 = '#bdbdbd'
                500 = '#9e9e9e'
                600 = '#757575'
                700 = '#616161'
                800 = '#424242'
                900 = '#212121'
                A100 = '#d5d5d5'
                A200 = '#aaaaaa'
                A400 = '#303030'
                A700 = '#616161'
                contrastThreshold = '3'
                getContrastText = 'f E()'
                augmentColor = 'f B()'
                tonalOffset = '0.2'
            }
            text = @{
                primary = 'rgba(0, 0, 0, 0.87)'
                secondary = 'rgba(0, 0, 0, 0.54)'
                disabled = 'rgba(0, 0, 0, 0.38)'
                hint = 'rgba(0, 0, 0, 0.38)'
                divider = 'rgba(0, 0, 0, 0.12)'
            }
            background = @{
                default = '#fafafa'
                paper = '#fff'
            }
            action= @{
                active = 'rgba(0, 0, 0, 0.54)'
                hover = 'rgba(0, 0, 0, 0.04)'
                hoverOpacity = '0.04'
                selected = 'rgba(0, 0, 0, 0.08)'
                selectedOpacity = '0.8'
                disabled = 'rgba(0, 0, 0, 0.26)'
                disabledBackground = 'rgba(0, 0, 0, 0.12)'
                disabledOpacity = '0.38'
                focus = 'rgba(0, 0, 0, 0.12)'
                focusOpacity = '0.12'
                activatedOpacity = '0.12'
            }
        }
    }
}

# Style:
    
$GlobalStyle ='
    #logoImage{
        max-width: auto;
        max-height: auto;
        display: block;
        margin-left: -5%;
    }
    .MuiCardContent-root {
        justify-content: center;
    }
    .MuiPaper-root {
        text-align: center;
        margin-left: 10%;
        margin-right: 10%;
        border-radius: 20px;
    }
    .MuiTypography-body1 {
        font-size: 18px;
        font-weight: 600;
        font-family: cursive
    }
    .MuiTypography-body2 {
        font-size: 14px;
        font-weight: 300;
    }
    .MuiGrid-grid-xs-6 {
        margin: auto;
    }'
Product: PowerShell Universal
Version: 2.5.3

You need to adjust the grey hashtable to use strings rather than ints.

  grey = @{
                '50' = '#fafafa'
                '100' = '#f5f5f5'
                '200' = '#eeeeee'
                '300' = '#e0e0e0'