When I first melted this color, it behaved much like Effetre Powder Pink (without the terracotta orange color) in that it grays out in the flame and has a blotchy striking pattern which is difficult to control. Mud Slide strikes to a color that is a lot like the drink it might be named after - a dense light brown bordering on a pale clay. Once it strikes evenly, it makes a wonderful opaque base for darker transparent browns such as CiM's new Maple (post about that one here).
Mud Slide is relatively non-reactive as far as I can tell - it works well with other glasses and does not bleed when encased. The color evens out under a layer of clear encasing, lightening to a true tan shade.
Pictured beads include a solid lentil, an encased spacer, a solid basic round, and a round with a base of Mud Slide, decorated with a scroll in encased purple stringer.
Like Powder Pink, Mud Slide tends to even out when worked longer and when layered with other glass. It only separates and gets blotchy when used as a solid base and not pressed or worked. It's a lovely opaque shade that would make a nice base for many transparents.
So far, the only place I have seen where Mud Slide can be purchased is at Frantz as part of their Beyond Beauty rod assortment. Hopefully they will add the individual colors of that assortment soon!