I tried different settings but without success. How change a thin dark purple line which is used for guidance if you're following a course? I would like use different colour eg. #ffff00ff
I also notice the Popularity High Contrast MapTheme has a "BG width" & "FG width" parameter and while it is the same for all the theme Popularity_1 to _7 it must have something to do with Road width and perhaps set programmatically as the popular roads are wider on the map than the less popular? Would be nice to be able to increase the width of the "MPM_ACTV_CRS_CLR" but I have played with it pre version 20.19 using the BG/FG and nothing changes, might try again?
<style field="MPM_POPULARITY_1_CLR" bg_width="-1" fg_width="50">
<color>
<primary day="#ffb0b0b0" night="#ffb0b0b0"/>
<secondary day="#00f8fcf8" night="#00f8fcf8"/>
</color>
</style>