Addon version 9.0.1

1. Creating a new icon for spell cool down
2. Tracking Festering Strike spell
3. Marking the checkbox "Range check

Its expected to happen: the icon should show as configured on the Out of range slider (icon color, transparency etc...)
What happens instead: the icon stays the same as the original

The string for the festering strike only:

^1^T^SShowTimer^B ^SType^Scooldown ^SName^SFestering~`Strike ^SEnabled^B ^SManaCheck^B ^SShowTimerTextnoOCC^B ^SStates^T ^N2^T ^SColor^Sffffffffd ^SAlpha^N1 ^t^N3^T ^SColor^Sffff0000 ^SAlpha^N1 ^t^N4^T ^SAlpha^N1 ^t^t^SRangeCheck^B ^t^N90101^S~`~| ^Sicon^^

The 1st image is the configuration used for the icon
The 2nd is an example using the same configurations on two icons, only changing the spell name

Thanks, will be fixed in the next release. You can go download the latest https://www.curseforge.com/wow/addons/libspellrange-1-0 right now if you don't want to wait.