This could do with a little better colour design, but let me just give you this to look at:

https://gjcp.net/plugins/peacock/

Yeah. Skeuomorphism isn't dead. Buttons need to look like buttons. Sliders need to look like sliders.

You just know looking at it that when you click on the little buttons, they pop in slightly as the LEDs go on and off, right? Does it look cheesy and 80s and dated? Yeah it sounds cheesy and 80s and dated too.