Goggle map crashed after drawing more than 1300 markers with custom color

I can draw more than around 8000 default red markers without setting icon property for marker.

But I want to draw markers with different colors depending upon marker's value. In XCOde I get below warning:- "((null)) was false: Reached the max number of texture atlases, can not allocate more.  ((null)) was false: Failed to get the icon for the given CGImageRef. ((null)) was false: Failed to allocate texture space for marker"

 from Google Map SDK & after that around 1300 markers it gets crashed. Is there any other way to set different colors to markers without crashing for more than 1300 markers.

I am setting marker's colour like below:-

marker.icon = GMSMarker.markerImage(with: self.getColorsFromString(strColor: strColor))

 func getColorsFromString(strColor:String) -> UIColor
{
    var color = UIColor()
    
    switch strColor {
    case "GREEN":
        color = UIColor.green
    case "YELLOW":
        color = UIColor.yellow
    case "RED":
        color = UIColor.red
    case "ORANGE":
        color = UIColor.orange
    case "BLUE":
        color = UIColor.blue
    case "CYAN":
        color = UIColor.cyan
    case "MAGENTA":
        color = UIColor.magenta
        
    default:
        color = UIColor.red
        print("default color")
    }
    return color
    
}