Tesoro GRAM SE Spectrum Keyboard @ TechPowerUp
 

The GRAM SE Spectrum keyboard from Tesoro is a hybrid of their earlier Excalibur and GRAM series. It takes the excellent optical switches from the former, which were co-developed with Gateron, and adds in the customization options of the latter to provide a keyboard with user-replaceable switches, RGB backlighting, and onboard and software controls - all at an attractive price.

https://www.techpowerup.com/reviews/...M_SE_Spectrum/