This CSS trick works on modern web browsers (you will not see it until you execute your app)
Add this code into Project>Properties>Styles

.text-color-gradient{
  background: -webkit-linear-gradient(left, red, yellow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

Replace "left" with your desired direction and "red" and "yellow" with your desired colors.
Then set the desired object css-class property to "text-color-gradient" and run your app :)

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