Just my two cents' worth, but a bottle of Tamiya clear red might take care of the yellow optics issue. The clear red is a darker shade than the yellow, so the color under the red shouldn't show up.
And if you don't mind the hassle, painting a base coat of silver over the optics before applying the clear red will give a similar effect as MP-01 OP's optics, except it's not chrome.
DISCLAIMER: This is all theoretical, so don't come hunting me down with a Magnum 500 if something goes wrong.

BTW, I'm completely satisfied with my Takara Soundwave, and have absolutely no intention of buying a second one. ...never mind the fact that my local TRU won't even bring one in.