Using dynamic colors (via luckperms meta placeholders) doesn't work for gradients while it does work for the color tag. Same happens when using hex colors.
/lp g test meta set color1 blue
/lp g test meta set color1 yellow
/tellform @s <color '%luckperms:meta color1%'>color1</> <color '%luckperms:meta color2%'>color2</>
/tellform @s <gradient '%luckperms:meta color1%' '%luckperms:meta color2%'>test</>
Using dynamic colors (via luckperms meta placeholders) doesn't work for gradients while it does work for the color tag. Same happens when using hex colors.