Velkommen til GTA5-Mods.com

Really hope the author returns. In the meantime if someone wants a temporary fix...

Back up stuff first. Then use OpenIV. Go to: Editing mods ➔ update ➔ update.rpf ➔ common ➔ data ➔ pickups.meta

Click the Edit mode and ok the pop up. Then right click the pickups.meta file and Edit.

Take the contents and dump it into Notepad. One at a time, bulk search and replace these lines (assuming you want to make all pickups brighter, if not you'll have to selectively edit):
<GlowIntensity value="0.500000" />
<DarkGlowIntensity value="0.500000" />
<GlowRange value="2.000000" />

With higher values. 12 for the first two and 30 for the last one is what I went with. If you care about MultiPlayer then do the same with the two similar lines that start with MP.

I couldn't get it to give it that nice colored aura, but at least it brightens up enough even in daylight you can spot an item from a distance.

Still failing in 2026. ScriptHookVDotNet.log gives the following:

[12:48:21] [DEBUG] Loading assembly GlowingPickups.dll ...
[12:48:21] [INFO] Found 1 script(s) in GlowingPickups.dll resolved to API version 3.7.0 (script assembly version: 1.1.1.0, target API version: 3.6.0).
[12:48:21] [DEBUG] Instantiating script GlowingPickups.GlowingPickups ...
[12:48:21] [ERROR] Failed to instantiate script GlowingPickups.GlowingPickups because constructor threw an exception: System.InvalidOperationException: Couldn't find the CPickupData offset of CPickup.
Terminating GlowingPickups. at GlowingPickups.GlowingPickups..ctor()