How can I change the alpha value of multicolored text to 0?

It doesn’t let me change the alpha value of my multicolored text to 0. How can I fix it? this is my text: <color=#FF0000FF>G</color><color=#0F2BFFFF>a</color><color=#00EA00FF>m</color><color=Yellow>e</color> <color=#FF0000FF>O</color><color=#0F2BFFFF>v</color><color=#00EA00FF>e</color><color=Yellow>r</color>

Add the CanvasGroup component and set the alpha with that.