Women's Modez (shoes from Attitude, there's a mail version called LUX Loafers or something, AFB) give a +1 to disguise, allowing you to change heel-height to appear smaller/taller I suppose.
Fiberoptic Hair might be useful for on-the-spot appearance changes too. (Doesn't give a mechanical benefit though).
One thing I always found a good option was getting a nanohive installed and getting full-body max-rating nano-tattoos. This allows you to be anything from a tattooed black guy to a crispy-clean albino in a matter of seconds. (Or green, blue, any color, any pattern, even with movement)
For clothes, there's options to have color-changing clothes (if you want it quickly, get ruthenium polymer mods). Or wear holowear (Attitude), there's one that's almost good at non-being-transparent and you could replicate pretty much any outfit.
And cybereyes with cosmetic mods to change lenses...
A lot of these things don't give mechanical benefits (no rules that they give +'s to disguise), but talk to your GM about it. If Lonestar cops are chasing a 2m tall green-spike haired black guy in a long black trench coat but when you round the corner in a few seconds you turn into a 1.90m tall white guy with swastika tattoos wearing a white robe with pointy hat, a good GM might have them run right past you.