https://www.tomshardware.com/news/klevv-expands-ddr4-portfolio-with-cras-xr-rgb-and-bolt-xr-ram
 
Klevv, a subsidiary of SK Group, today announced two new DDR4 memory product lines - one with RGB flavoring, the other without. The Cras XR RGB features a metal heatspreader with a dotted pattern (42.5 mm height), topped by an RGB LED bar compatible with multiple RGB control software in the market (think ASUS Aura Sync, MSI Mystic Light Sync, and Razer Chroma RGB, among others). The Cras XR RGB is available in kits ranging from 8 GB single-stick through to 32 GB (2 x 16 GB) kits in multiple memory speeds; 3600 MHz with 18-22-22-42 timings @ 1.35 V (up to 2x 16 GB); 4000 MHz with 19-25-25-45 timings @ 1.40 V (up to 2x 8 GB) and 4200 MHz with 19-26-26-46 timings @ 1.40 V (up to 2x 8 GB).

The Bolt XR forgoes the RGB lighting and uses a textured metal heatspreader with black branding (36.7 mm height). The Bolt XR isn't available at the top 4200 MHz speed, though; it seems top performance is reserved for RGB enthusiasts. The only available speeds are 3600 MHz with 18-22-22-42 timings @ 1.35 V (up to 2x 16 GB) and 4000 MHz with 19-25-25-45 timings @ 1.40 V (up to 2x 8 GB). No word on pricing or availability was known at time of writing, though Klevv does offer a limited lifetime warranty for these modules.
 
The RGB isn't that bad but could be better in my opinion.