Glow Text in Sign

When Beta 1.16.210.59 out, we have glow ink sack that can we used to craft Glow Item Frame. But, I can't make text on sign glow using glow ink sack. There's no Color Code / Formatting Code ("§" symbol) to make text glow yet.

Java Edition has this update too, and they can make text glow.

 

How To Reproduce :

1. Take the sign and glow ink sack or any dye
2. Write something in sign
3. Try to make text change colour / glow

Observed Results :

The text doesn't change colour / glow

Expected Results :

The text change colour / glow

 

If this feature is already available, please tell me how