Old '90s-ish cartoon, where a band gets powers from a gem/rock

It might be Stone protectors a cartoon from 1996 based on a toyline with the same name. It is about a bad band that gets access to magic gems that a magic princess called Opal tries to hide. After they save her from the villain of the show she teaches them how to use them as superheroes.

From Wikipedia:

After being thrown out the back door of a New York City club, an awful rock band known as the Rock Detectors found the five magical stones which gave them troll-like appearances and special skills (not the least of which is playing good music). This put them at odds with the music-hating Zok and his henchman Zink, collectively known as The Prodtectors.

• Cornelius, the group's leader, holds the green stone and became a samurai with an assortment of appropriate weaponry (katana, shuriken, and a pair of nunchaku made of microphones). He is the band's lead singer, but also plays the guitar.
• Chester holds the red stone, became an expert at wrestling and received great strength. He plays the bass guitar and saxophone.
• Clifford holds the blue stone and became a "rock climber." He is the band's drummer.
• Angus holds the yellow stone and became a "soldier" and an expert at turning mundane objects into weapons. He plays the keyboard. Angus ostensibly built up the Protectors' bizarre attack vehicles from things like barbecues and lawnmowers.
• Maxwell holds the orange stone and became an "accelerator" with in-line skates. He plays the guitar.