UDL styles are defunct

I have never found that to be true.

However, Notepad++ has decided that this (left) was what I wanted. Spoiler alert: it is not.

Then tell it what colors you actually want for they various keywords, rather than telling it the wrong color.

You need to change the individual style colors for each keyword group. So whatever keyword# the LD and PUSH keywords are in, you need to choose it’s Styler button, then set the foreground color to green, probably with bold enabled. And whichever keyword# A and AF and C are defined in, you need to set to your aqua/cyan color with the right background (instead of white background). And your number style definition need to be set to magenta rather than white+italic+underline

I will admit, UDL does have limitations, and there are some things you won’t be able to do. But I believe that the symptoms you showed are easily correctable by you hitting the Styler button and selecting appropriate colors.